Romans 4:19
And being not weak in faith, he considered not his own body as now dead, when he was about a hundred years old, neither yet the deadness of Sarah's womb:
Genesis 17:17
Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is a hundred years old? and shall Sarah, that is ninety years old, bear?
Genesis 18:11-14
Now Abraham and Sarah were old and well stricken in age; and it ceased to be with Sarah after the manner of women.
Matthew 6:30
Therefore, if God so clothe the grass of the field, which today is, and tomorrow is cast into the oven, shall he not much more clothe you, O you of little faith?
Matthew 8:26
And he said unto them, Why are you fearful, O you of little faith? Then he arose, and rebuked the winds and the sea; and there was a great calm.
Matthew 14:31
And immediately Jesus stretched forth his hand, and caught him, and said unto him, O you of little faith, why did you doubt?
Mark 9:23-24
Jesus said unto him, If you can believe, all things are possible to him that believes.
John 20:27-28
Then said he to Thomas, Reach here your finger, and behold my hands; and reach here your hand, and thrust it into my side: and be not faithless, but believing.
Romans 4:20-21
He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;
Romans 14:21
It is good neither to eat meat, nor to drink wine, nor anything by which your brother stumbles, or is offended, or is made weak.
Hebrews 11:11-19
Through faith also Sara herself received strength to conceive, and was delivered of a child when she was past age, because she judged him faithful who had promised.