The Sign of the Covenant :GENESIS:
17 When Abram was ninety-nine years old, the Lord appeared to Abram and said to him, “I am [a]Almighty God; walk before Me and be blameless. 2 And I will make My covenant between Me and you, and will multiply you exceedingly.” 3 Then Abram fell on his face, and God talked with him, saying: 4 “As for Me, behold, My covenant is with you, and you shall be a father of [b]many nations. 5 No longer shall your name be called [c]Abram, but your name shall be [d]Abraham; for I have made you a father of [e]many nations. 6 I will make you exceedingly fruitful; and I will make nations of you, and kings shall come from you. 7 And I will establish My covenant between Me and you and your descendants after you in their generations, for an everlasting covenant, to be God to you and your descendants after you. 8 Also I give to you and your descendants after you the land in[f] which you are a stranger, all the land of ISRAEL an everlasting possession; and I will be their God.”