Not when Abraham is mentioned, since there was no OT Law during his time.
Romans 4:2 For if Abraham were justified by works, he hath whereof to glory; but not before God.
We have went over this already in the thread "JUSTIFICATION" to say the "works" of Abraham was the OT Law is saying that Paul, a hebrew of hebrews is actually considering binding the OT Law on Abraham, which is impossible and absurd. Not only that, but he is telling this to Jews, who knew very well this was impossible, and in order to convince them of the contrary: he appeals to his "no man can boast" argument, instead of stating the obvious: "The OT Law was not yet given".
Where do you get this ideas from? You speak a lot of opinion, not bible. The exact opposite is true:
John 14:21 He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
Luke 10:27 And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
28 And he said unto him, Thou hast answered right: this do, and thou shalt live.
1 John 2:3 And hereby we do know that we know him, if we keep his commandments.
4 He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
1 John 3:24 And he that keepeth his commandments dwelleth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he hath given us.
1 John 5:3 For this is the love of God, that we keep his commandments: and his commandments are not grievous.
Since you bank everything on His physical red blood, answer me this:
How can the conscience be purged from sin, by the shedding of Innocent Blood ?
Nay, It will increase the condemnation.
The blood of Jesus is drink for the spirit, nor physical red blood as the carnally minded think:
John 6:54 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.
So, physical red blood can not take away sin, that is why you still need to repent, and keep his commandments.
And try reading the rest of the bible, I dont know if you noticed but you only quoted Paul, try getting a 2nd witness.
Sacrifice ?
1 Samuel 15:22 And Samuel said, Hath the Lord as great delight in burnt offerings and sacrifices, as in obeying the voice of the Lord? Behold, to obey is better than sacrifice, and to hearken than the fat of rams.
Isaiah 1:11 To what purpose is the multitude of your sacrifices unto me? saith the Lord: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of he goats.
12 When ye come to appear before me, who hath required this at your hand, to tread my courts?
13 Bring no more vain oblations; incense is an abomination unto me; the new moons and sabbaths, the calling of assemblies, I cannot away with; it is iniquity, even the solemn meeting.
14 Your new moons and your appointed feasts my soul hateth: they are a trouble unto me; I am weary to bear them.
15 And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood.
Jeremiah 7:22 For I spake not unto your fathers, nor commanded them in the day that I brought them out of the land of Egypt, concerning burnt offerings or sacrifices:
Ecclesiastes 5:1 Keep thy foot when thou goest to the house of God, and be more ready to hear, than to give the sacrifice of fools: for they consider not that they do evil.