Romans 4:19
And being not weak in faith, he considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sara'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 an 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
Wherefore, if God so clothe the grass of the field, which to day is, and to morrow is cast into the oven, shall he not much more clothe you, O ye of little faith?
Matthew 8:26
And he saith unto them, Why are ye fearful, O ye 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 thou of little faith, wherefore didst thou doubt?
Mark 9:23-24
Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
John 20:27-28
Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy 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 flesh, nor to drink wine, nor any thing whereby thy brother stumbleth, or is offended, or is made weak.
Hebrews 11:11-19
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.