Genesis 17:16

16 And I will bless her, and give thee a son of her, and I will bless him, and he shall become nations, and kings of nations shall be of him.

Genesis 17:16 Meaning and Commentary

Genesis 17:16

And I will bless her
The Targum of Jonathan adds, "in her body", with fruitfulness, who before was barren, and in her soul with spiritual blessings, and in both with the blessing of eternal life:

and give thee a son also of her;
as he had given him one of Hagar: God had before promised Abraham a son that should be his heir, but he had not till now told him that he should be born of Sarah his wife:

yea, I will bless her;
which is repeated for the confirmation of it, and for the greater strengthening Abraham's faith in it:

and she shall be [a mother] of nations;
of the twelve tribes of Israel; of the two nations of Israel and Judah;

kings of people shall be of her;
as David, Solomon, and others, and especially the King Messiah.

Genesis 17:16 In-Context

14 And the uncircumcised male, who shall not be circumcised in the flesh of his foreskin on the eighth day, that soul shall be utterly destroyed from its family, for he has broken my covenant.
15 And God said to Abraam, Sara thy wife—her name shall not be called Sara, Sarrha shall be her name.
16 And I will bless her, and give thee a son of her, and I will bless him, and he shall become nations, and kings of nations shall be of him.
17 And Abraam fell upon his face, and laughed; and spoke in his heart, saying, Shall there be a child to one who is a hundred years old, and shall Sarrha who is ninety years old, bear?
18 And Abraam said to God, Let this Ismael live before thee.

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