Sirach 44:19-24

19 Abraham was a great father of many people: in glory was there none like unto him;
20 Who kept the law of the most High, and was in covenant with him: he established the covenant in his flesh; and when he was proved, he was found faithful.
21 Therefore he assured him by an oath, that he would bless the nations in his seed, and that he would multiply him as the dust of the earth, and exalt his seed as the stars, and cause them to inherit from sea to sea, and from the river unto the utmost part of the land.
22 With Isaac did he establish likewise the blessing of all men, and the covenant,
23 And made it rest upon the head of Jacob. He acknowledged him in his blessing, and gave him an heritage, and divided his portions; among the twelve tribes did he part them.
24 And he brought out of him a merciful man, which found favour in the sight of all flesh, even Moses, beloved of God and men, whose memorial is blessed.

The Brenton translation of the Septuagint is in the public domain.