It was through the sacrificial death of the spotless Lamb that God’s cleansing blood was shed to atone for all the sins of humanity. The author of Hebrews goes to great lengths to establish the fact that the blood of sacrificial animals could never atone for sin, but that these things were mere types of the only real blood sacrifice offered once by Messiah.
But when Christ appeared as a high priest of the good things to come, He entered through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation; and not through the blood of goats and calves, but through His own blood, He entered the holy place once for all, having obtained eternal redemption. For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled sanctify for the cleansing of the flesh, how much more will the blood of Christ, who through the eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God?
For this reason He is the mediator of a new covenant, so that, since a death has taken place for the redemption of the transgressions that were committed under the first covenant, those who have been called may receive the promise of the eternal inheritance. For where a covenant is, there must of necessity be the death of the one who made it. [Hebrews 9:11-16]
For the Jews who did not believe that the Lord Jesus was the Messiah, their “salvation” could only come through the perfect keeping of the Mosaic Code, an actual impossibility. The Torah is perfect, of course, but impossible to keep properly without faith and the introduction of God’s Spirit. Besides, the Jerusalem Temple was destroyed in 70 A.D. and the requisite animal sacrifices have not been administered since, going on 2,000 years. How then can one be cleansed without the Lamb of God? Within forty years of the Blood Covenant, those who rejected the Sacrifice Lamb lost everything as a result. Everything. Those who believed and signed on gained everything (See Mark 10:29-30).
Therefore, brethren, since we have confidence to enter the holy place by the blood of Jesus, by a new and living way which He inaugurated for us through the veil, that is, His flesh, and since we have a great priest over the house of God, let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience and our bodies washed with pure water. [Hebrews 10:19-22]
The apostle Peter had been instructed of all this by the Lord Jesus, and it is why he delivered a message on the Day of Pentecost featuring these very ideas:
1. Faith in God
2. Repentance (Death)
3. Water Baptism (Burial)
4. The infilling of the Holy Spirit (Resurrection)
“Therefore let all the house of Israel know for certain that God has made Him both Lord and Christ—this Jesus whom you crucified.” Now when they heard this, they were pierced to the heart, and said to Peter and the rest of the apostles, “Brethren, what shall we do?” Peter said to them, “Repent, and each of you be baptized in the name of Jesus Christ for the forgiveness of your sins; and you will receive the gift of the Holy Spirit. For the promise is for you and your children and for all who are far off, as many as the Lord our God will call to Himself.” [Acts 2:36-39]
The Jews hearing this message knew exactly what Peter was saying. God had been manifest in flesh. He had dwelt among them. YHWH showed up on the scene as per all the many prophecies of their ancient scrolls, and in their ignorance they killed Him. Why do so many Christians continue to do the same by not recognizing who the Lord Jesus really is? He is not merely a “second” Person of a Roman Triad, but our great God and Savior who willingly shed His blood for our salvation. He has fulfilled perfectly His half of the New Covenant, and awaits all those who would fulfill their half by accepting and honoring Him for who He really is, by submitting to heart circumcision, and by obeying Him unto life.
“Behold, I am coming quickly, and My reward is with Me, to render to every man according to what he has done. I am the Alpha and the Omega, the first and the last, the beginning and the end. Blessed are those who wash their robes, so that they may have the right to the tree of life, and may enter by the gates into the city. Outside are the dogs and the sorcerers and the immoral persons and the murderers and the idolaters, and everyone who loves and practices lying. “I, Jesus, have sent My angel to testify to you these things for the churches. I am the root and the descendant of David, the bright morning star.” [Revelation 22:12-16] 
© 2011 by RJ Dawson. All Rights Reserved. [Part 2 of 2]
Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which He purchased with His own blood. [Acts 20:28]
In his message at Miletus, while on his fateful way to Jerusalem, the apostle Paul clearly states that the Lord Jesus is YHWH, the God of the Old Testament. It is a hard concept to grasp. The apostle John also explained this very well in his Gospel. Being monotheistic Jews, as were (1) All the apostles, (2) All the 120 gathered on Pentecost, and (3) The entire community of saints for about the first seven to ten years of its existence, both Paul and John clearly revealed the fact that God became a Man.
There was absolutely no thought or concept among Jews that God was a multiplicity of divine persons, and the very idea was heresy. This was one of the main reasons why so many Jews had such a hard time believing in the Lord Jesus as their Messiah. As the world’s only monotheists, they knew there was only one God. Therefore, they knew the apostles were claiming their one God YHWH had become one of them—a very hard concept to grasp, though the Old Testament Scriptures were filled with such prophetic fact, most notably perhaps, in the scroll of Isaiah:
For a child will be born to us, a son will be given to us; and the government will rest on His shoulders; and His name will be called Wonderful Counselor, Mighty God, Eternal Father, Prince of Peace. [Isaiah 9:6]
A great, great number of Jews did believe that Jesus was the One mentioned above, however, because their hearts were right, and because they were not looking upon their God through the philosophical prism of Greco-Roman mindbenders.
Acts 20:28 clearly states that it is God’s very blood that He used to purchase His community. God takes possession of each and every real believer through His blood. This is why the New Covenant is the ultimate blood covenant. Not only does God’s pure and perfect blood cleanse us from all sin, it is essentially the currency He uses to rightfully and legally obtain us.
Paul referred to the Lord Jesus as YHWH many times, as seen in the following verses. Though he states a clear distinction between Father and Son, he distinguishes neither from the God of the Old Testament Himself. This is not simply a matter of semantics, and our Lord Jesus is not merely a mythical, theological “eternal Son.”
He is God:
For I could wish that I myself were accursed, separated from Christ for the sake of my brethren, my kinsmen according to the flesh, who are Israelites, to whom belongs the adoption as sons, and the glory and the covenants and the giving of the Law and the temple service and the promises, whose are the fathers, and from whom is the Christ according to the flesh, who is over all, God blessed forever. Amen. [Romans 9:3-5]
He is the image of the invisible God, the firstborn of all creation. For by Him all things were created, both in the heavens and on earth, visible and invisible, whether thrones or dominions or rulers or authorities—all things have been created through Him and for Him. He is before all things, and in Him all things hold together. He is also head of the body, the church; and He is the beginning, the firstborn from the dead, so that He Himself will come to have first place in everything. For it was the Father’s  good pleasure for all the fullness to dwell in Him, and through Him to reconcile all things to Himself, having made peace through the blood of His cross; through Him, I say, whether things on earth or things in heaven. [Colossians 1:15-20]
Regarding theological concepts of the Person of God, Paul knew well that intellectuals and purveyors of cold rationality would attempt to form a god of their own understanding rendered through pure mental reasoning and head knowledge, and bypassing the heart:
See to it that no one takes you captive through philosophy and empty deception, according to the tradition of men, according to the elementary principles of the world, rather than according to Christ. For in Him all the fullness of Deity dwells in bodily form, and in Him you have been made complete, and He is the head over all rule and authority; and in Him you were also circumcised with a circumcision made without hands, in the removal of the body of the flesh by the circumcision of Christ; having been buried with Him in baptism, in which you were also raised up with Him through faith in the working of God, who raised Him from the dead. [Colossians 2:8-12]
Speaking of water baptism, there was no such thing as “title” baptism (Father, Son, and Holy Spirit) in the original community of saints throughout the entire Book of Acts and New Testament epistles. All baptism was by full immersion in the Name above all names—the Name of our Lord Jesus Christ. The apostle Paul reflected this fact in the passage above after claiming that YHWH came to earth and dwelt among us in human form, that our Lord Jesus is the supreme head over all authority and rule, that all real believers undergo the circumcision of Christ, and that all Scriptural water baptism is done in His Name. He also said God resurrected His own dead human body, which is exactly what the Lord Jesus said He would do:
“Destroy this temple, and in three days I will raise it up.” [John 2:19] 
© 2011 by RJ Dawson. All Rights Reserved. [Part 1 of 2]
 Italicized words in the NASV95 New Testament are not in the original Greek text. Hence the word “Father” does not appear at this place in this passage.
 Unless otherwise noted all Scriptures are taken from the New American Standard Bible, © 1960, 1963, 1968, 1971, 1972, 1973, 1975, 1977, 1995 by The Lockman Foundation. Used by permission.