IP, regarding your question to Musti - "The question we were actually dealing with...was 'why would the topic of replacing the promise with the law come up in Galatians 3?'.
Fact is, IP, that there is no replacing the Law with the Promise in Gal. 3.
That is just you, in your misinformed confusion...once more.
Did the act of Grace in the following - way back when - look like it replaced The Law that day, or that the Law replaced the Promise?
Exodus 32:9 And the LORD said unto Moses, I have seen this people, and, behold, it is a stiffnecked people: 32:10 Now therefore let me alone, that my wrath may wax hot against them, and that I may consume them: and I will make of thee a great nation. 32:11 And Moses besought the LORD his God, and said, LORD, why doth thy wrath wax hot against thy people, which thou hast brought forth out of the land of Egypt with great power, and with a mighty hand? 32:12 Wherefore should the Egyptians speak, and say, For mischief did he bring them out, to slay them in the mountains, and to consume them from the face of the earth? Turn from thy fierce wrath, and repent of this evil against thy people. 32:13 Remember Abraham, Isaac, and Israel, thy servants, to whom thou swarest by thine own self, and saidst unto them, I will multiply your seed as the stars of heaven, and all this land that I have spoken of will I give unto your seed, and they shall inherit it for ever. 32:14 And the LORD repented of the evil which he thought to do unto his people. 32:15 And Moses turned, and went down from the mount, and the two tables of the testimony were in his hand: the tables were written on both their sides; on the one side and on the other were they written. 32:16 And the tables were the work of God, and the writing was the writing of God, graven upon the tables.
His Grace that day was actually THEIR (Prophesied Grace) Covenant ASPECT of this..
Galatians 3:17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.
That was exactly what Moses reminded the LORD of that day - THEIR PROPHESIED aspect of that.
duh-uh
Nevertheless, Rom. 5:8