He told them, “Because you have so little faith. I can guarantee this truth: If your faith is the size of a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.”
Jesus answered them, “I can guarantee this truth: If you have faith and do not doubt, you will be able to do what I did to the fig tree. You could also say to this mountain, ‘Be uprooted and thrown into the sea,’ and it will happen.
The Lord said, “If you have faith the size of a mustard seed, you could say to this mulberry tree, ‘Pull yourself up by the roots, and plant yourself in the sea!’ and it would obey you.
Abraham didn’t weaken. Through faith he regarded the facts: His body was already as good as dead now that he was about a hundred years old, and Sarah was unable to have children.