By the blood of Jesus Christ all nations of the world are blessed and can draw close to God. What we do take hold of is God's new covenant which replaces the Old Covenant which is the law.
What covenant should we take hold of and why?
The new covenant we are now in is all about the blood of Christ. Not changing the law....but fulfilling the law
ZECH.9 [9] Rejoice greatly, O daughter of Zion; shout, O daughter of Jerusalem: behold, THY KING COMETH UNTO THEE: HE IS JUST, AND HAVING SALVATION; lowly, and riding upon an ass, and upon a colt the foal of an ass.[10] And I will cut off the chariot from Ephraim, and the horse from Jerusalem, and the battle bow shall be cut off: and he shall speak peace unto the heathen: and his dominion shall be from sea even to sea, and from river even to the ends of the earth.[11] As for thee also, BY THE BLOOD OF THY COVENANT I have sent forth thy prisoners out of the pit wherein is no water
Verse 9 definately prophecies of the coming Jesus. Verse 11, Jesus is called the blood of thy covenant
HEBREWS 12 [23] To the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect,[24] And to Jesus THE MEDIATOR OF THE NEW COVENANT, AND TO THE BLOOD of sprinkling, that speaketh better things than that of Abel.
New covenant...blood
LUKE 22 [19] And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me. [20] Likewise also the cup after supper, saying, THIS CUP IS THE NEW TESTAMENT IN MY BLOOD, which is shed for you.
New testament...blood
HEBREWS 9 [1] Then verily THE FIRST COVENANT HAD ALSO ORDINANCES of divine service, and a worldly sanctuary. [9] Which was a figure for the time then present, in which were offered both gifts and sacrifices, that could not make him that did the service perfect, as pertaining to the conscience;[10] WHICH STOOD ONLY IN MEATS AND DRINKS, and divers washings, and carnal ordinances, imposed on them until the time of reformation.[12] NEITHER BY THE BLOOD OF GOATS AND CALVES, BUT BY HIS OWN BLOOD he entered in once into the holy place, having obtained eternal redemption for us.
old covenant...blood of goats.....The meat and drink offerings found in Col.2[16] ...... fulfilled in Christ
HEBREWS [4] FOR IT IS NOT POSSIBLE THAT THE BLOOD OF BULLS AND OF GOATS SHOULD TAKE AWAY SINS.[5] Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:[6] In burnt offerings and sacrifices for sin thou hast had no pleasure.[7] Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.[8] Above when he said, sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law;[9] Then said he, Lo, I come to do thy will, O God. HE TAKETH AWAY THE FIRST, THAT HE MAY ESTABLISH THE SECOND.
He taketh away the first {covenant}, that he may establish the second.
JOHN 6 [53] [54] Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. [55] For MY FLESH IS MEAT INDEED, and MY BLOOD IS DRINK INDEED.
And theres the 2nd
MATTHEW 5 [17] Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. [18] For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Jesus did not come to change or destroy the law. The sabbath is still to be kept. He came to fulfil what was written of Him in the books of the law.