Numbers 23:19 – God is not a man, that He should lie, nor the son of man, that He should repent.  Has He said, and will He not do it?  Or has He spoken, and will He not make it good?

Mark 11:23,24 – For assuredly, I say to you, whoever says to this mountain, “Be removed and be cast into the sea,” and does not doubt in his heart, but believes that those things he says will come to pass, he will have whatever he says.  Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.

2 Corinthians 1:20 – For all the promises of God in Him are Yes, and in Him Amen, to the glory of God through us.