But when you ask, you must believe and not doubt, because the one who doubts is like a wave of the sea, blown and tossed by the wind. That person should not expect to receive anything from the Lord. Such a person is double-minded and unstable in all they do. (James 1:6-8 NIV)
Blown and tossed by the waves of the sea on a stormy day makes us sea sick and ruins our day. Blown and tossed by the waves of fear or doubt makes our faith sick lacking power in our prayers which ruins our lives. We pray in faith by putting our trust in the immovable rock of God’s Word.