The covenant with Abraham apparently went into effect when Abram (Abraham) crossed the Euphrates on his way to Canaan. The Law covenant was made 430 years later. (Ga 3:17) Jehovah had spoken to Abraham when he was living in Mesopotamia, in Ur of the Chaldeans, telling him to travel to the country that God would show him. (Ac 7:2, 3; Ge 11:31; 12:1-3) Exodus 12:40, 41 (LXX) tells us that at the end of 430 years of dwelling in Egypt and in the land of Canaan, “on this very day” Israel, who had been in slavery in Egypt, went out. The day they were delivered from Egypt was Nisan 14, 1513 B.C.E., the date of the Passover. (Ex 12:2, 6, 7) This would seem to indicate that Abraham crossed the Euphrates River on his way to Canaan on Nisan 14, 1943 B.C.E., and evidently that is when the Abrahamic covenant took effect. God appeared to Abraham again after he had traveled into Canaan as far as Shechem and enlarged on the promise, saying, “To your seed I am going to give this land,” thereby giving an indication of the connection of this covenant with the promise in Eden, and revealing that the “seed” would take a human course, that is, would run through a human line of descent. (Ge 12:4-7) Other enlargements by Jehovah were later expressed, as recorded at Genesis 13:14-17; 15:18; 17:2-8, 19; 22:15-18.