James 1:6

But let him ask in faith, and waver not. For he that doubteth is like the waves of the sea, tossed of the wind, and carried with violence.

Ephesians 4:14

That we henceforth be no more children, wavering and carried with every wind of doctrine, by the wiliness of men and craftiness, whereby they lay a wait for us to deceive us.

Matthew 21:21-22

Jesus answered, and said unto them, "Verily I say unto you, if ye shall have faith, and shall not doubt, ye shall not only do that which I have done to the fig tree: but also if ye shall say unto this mountain, take thyself away, and cast thyself into the sea, it shall be done.

Mark 11:22-24

And Jesus answered, and said unto them, "Have confidence in God.

1 Timothy 2:8

I will, therefore, that the men pray every where, lifting up pure hands without wrath, or doubting.

Hebrews 10:23

and let us keep the profession of our hope, without wavering - for he is faithful that promised -

Hebrews 11:6

But without faith it is impossible to please him: For he that cometh to God, must believe that God is, and that he is a rewarder of them that seek him.

Hebrews 13:9

Be not carried about with divers and strange learning. For it is a good thing that the heart be established with grace, and not with meats, which have not profited them that have had their pastime in them.

2 Peter 2:17

These are wells without water, and clouds carried about of a tempest, to whom the mist of darkness is reserved forever.

Jude 1:12-13

These are spots which of your kindness feast together, without fear, feeding themselves. Clouds they are without water, carried about of winds: and trees without fruit at gathering time, twice dead, and plucked up by the roots.

Genesis 49:4

As unstable as water wast thou: thou shalt therefore not be the chiefest, for thou wentest up upon thy father's bed, and then defiledest thou my couch with going up.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Let

Matthew 21:22
And whatsoever thing ye shall ask in your prayers if ye believe, ye shall receive it."
Mark 11:22
And Jesus answered, and said unto them, "Have confidence in God.
1 Timothy 2:8
I will, therefore, that the men pray every where, lifting up pure hands without wrath, or doubting.
Hebrews 11:6
But without faith it is impossible to please him: For he that cometh to God, must believe that God is, and that he is a rewarder of them that seek him.

He

Genesis 49:4
As unstable as water wast thou: thou shalt therefore not be the chiefest, for thou wentest up upon thy father's bed, and then defiledest thou my couch with going up.
Ephesians 4:14
That we henceforth be no more children, wavering and carried with every wind of doctrine, by the wiliness of men and craftiness, whereby they lay a wait for us to deceive us.
Hebrews 10:23
and let us keep the profession of our hope, without wavering - for he is faithful that promised -
Hebrews 13:9
Be not carried about with divers and strange learning. For it is a good thing that the heart be established with grace, and not with meats, which have not profited them that have had their pastime in them.
2 Peter 2:17
These are wells without water, and clouds carried about of a tempest, to whom the mist of darkness is reserved forever.
Jude 1:12
These are spots which of your kindness feast together, without fear, feeding themselves. Clouds they are without water, carried about of winds: and trees without fruit at gathering time, twice dead, and plucked up by the roots.