Galatians 4:23
But he who was of the servant, was born according to the course of nature; whereas the son of the free-woman was by virtue of the promise.
Hebrews 11:11
By faith also Sarah received strength to conceive seed, and brought forth a son when she was past age, because she accounted Him faithful who had promised.
Romans 9:7-8
Nor because they are the seed of Abraham, are they all children of promise: but "in Isaac shall thy seed be called."
Romans 4:18-21
who against hope believed, with hope, that he should be the father of many nations, according to that which was said unto him, "So shall thy seed be."
Romans 10:8
bring up Christ from the dead)" but what saith it? "The word is nigh thee, in thy mouth and in thy heart." This is the word of faith which we preach: that if thou confess with thy mouth the Lord Jesus,
Galatians 4:28-29
Now we, brethren, like Isaac, are children of the promise.