And he said, The things which are impossible with men are possible with God.  Luke 18:27

Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them.  Mark 11:24

But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.  James 1:6

If ye shall ask any thing in my name, I will do it.  John 14:14

And he said, Thou hast asked a hard thing: nevertheless, if thou see me when I am taken from thee, it shall be so unto thee; but if not, it shall not be so.  II Kings 2:10