James 1:6
"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."
Cross References (ranked by relevance)
But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.
That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;
Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)
Be not carried about with divers and strange doctrines. For it is a good thing that the heart be established with grace; not with meats, which have not profited them that have been occupied therein.
I will therefore that men pray every where, lifting up holy hands, without wrath and doubting.