Gen 17:4
As for Me, this is My covenant with you, / And you shall become the father of a multitude of nations.
Eph 3:14
For this cause I bow my knees unto the Father,
Eph 3:15
Of whom every family in the heavens and on earth is named,

Abraham has one Son that was beloved to Him

Gen 22:2
And He said, Take now your son, your only son, whom you love, Isaac, and go to the land of Moriah, and offer him there as a burnt offering on one of the mountains of which I will tell you.
Gen 22:12
And He said, Do not stretch out your hand upon the boy, nor do anything to him; for now I know that you fear God, since you have not withheld your son, your only son, from Me.
Gen 22:16
And said, By Myself I have sworn, declares Jehovah: Because you have done this thing and have not withheld your son, your only son,