23:19 God is not a man, that he should lie, Neither the son of man, that he should repent: Hath he said, and will he not do it? Or hath he spoken, and will he not make it good?

4:20 yet, looking unto the promise of God, he wavered not through unbelief, but waxed strong through faith, giving glory to God, 4:21 and being fully assured that what he had promised, he was able also to perform.

3:29 And if ye are Christ's, then are ye Abraham's seed, heirs according to promise.

6:13 For when God made promise to Abraham, since he could swear by none greater, he sware by himself, 6:14 saying, Surely blessing I will bless thee, and multiplying I will multiply thee. 6:15 And thus, having patiently endured, he obtained the promise.

11:11 By faith even Sarah herself received power to conceive seed when she was past age, since she counted him faithful who had promised:

3:9 The Lord is not slack concerning his promise, as some count slackness; but is longsuffering to you-ward, not wishing that any should perish, but that all should come to repentance.