Galatians 3:8
Because the Scripture foresaw that God would bring the heathen into right standing with Himself on condition of faith, He beforehand proclaimed the good news to Abraham in the promise, "It is through you that all the heathen will be blessed."
Acts 3:25
And you are the descendants of the prophets and the heirs of the sacred compact which God made with your forefathers, when He said to Abraham: 'All the families of the earth are to be blessed through your posterity.'
Galatians 3:16
Now the promises were made to Abraham and his descendant. It does not say, "and to your descendants," in the plural, but in the singular, "and to your descendant," that is, Christ.
Hebrews 11:2
For by it the men of old won God's approval.