Matthew 21:22 (KJV)
22 And all things, whatsoever ye shall ask in prayer, believing, ye shall receive.
Mark 11:23 (KJV)
23 For 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.