Romans 4:19
And being not weak in faith, he considered not his own body 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 to him that is a hundred years old? and shall Sarah, who is ninety years old, bear?
Genesis 18:11-14
Now Abraham and Sarah were old and far advanced in age; and it ceased to be with Sarah after the manner of women.
Matthew 6:30
Wherefore, if God so clotheth the grass of the field, which to-day is, and to-morrow is cast into the oven, will he not much more clothe you, O ye of little faith?
Matthew 8:26
And he saith to 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 to him, O thou of little faith, Why didst thou doubt?
Mark 9:23-24
Jesus said to 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 by which thy brother stumbleth, or is offended, or is made weak.
Hebrews 11:11-19
Through faith also Sarah 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.