Contradiction with Exodus 23:25-26
These verses discuss blessings and health, not specifically contradicting Genesis 21:1.
Exodus 23:25-26: And ye shall serve the LORD your God, and he shall bless thy bread, and thy water; and I will take sickness away from the midst of thee.
Contradiction with Numbers 23:19
This verse speaks to the truthfulness of God, which aligns with Genesis 21:1 rather than contradicting it.
Numbers 23:19: God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?
Contradiction with Hebrews 11:11
This verse supports Genesis 21:1 by acknowledging the faith of Sarah in bearing a child.
Hebrews 11:11: Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age, because she judged him faithful who had promised.