Mark 11: 20And in the morning, as they passed by, they saw the fig tree dried up from the roots.
21And Peter calling to remembrance saith unto him, Master, behold, the fig tree which thou cursedst is withered away.
22And Jesus answering saith unto them, Have faith in God.
23For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith.
24Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them.
and again....
Matthew 7:7 Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
8 For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
9 Or what man is there of you, whom if his son ask bread, will he give him a stone?
10 Or if he ask a fish, will he give him a serpent?
11 If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father which is in heaven give good things to them that ask him?
and again...
Matthew 18:19 Again I say unto you, That if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven.
and again...
Mark 9:23Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
24And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.