James 1:6

but let him ask in faith, nothing doubting; for he who doubts is like a wave of the sea, wind-driven and tossed.

Ephesians 4:14

that we may no longer be babes, billow-tossed, and carried about with every wind of teaching, in the sleight of men, in the craftiness suited to the artifice of error;

Matthew 21:21-22

And Jesus, answering, said to them, "Verily I say to you, if ye have faith, and do not doubt, not only the withering of the fig tree shall ye accomplish, but, even if ye say to this mountain, 'Be lifted up, and be cast into the sea,' it shall be done.

Mark 11:22-24

And Jesus, answering, saith to them, "Have the faith of God.

1 Timothy 2:8

I desire, therefore, that the men pray in every place, lifting up holy hands, without wrath and disputing;

Hebrews 10:23

let us hold fast the confession of the hope without wavering (for faithful is He Who promised);

Hebrews 11:6

And, apart from faith, it is impossible to please Him; for he that comes to God must believe that He is, and that He becomes a rewarder to those who seek after Him.

Hebrews 13:9

Be not carried away by manifold and strange teachings; for it is good that the heart be established with grace, not with foods, in which those who occupied themselves were not profited.

2 Peter 2:17

These are fountains without water, and mists driven by a storm, for whom the blackness of darkness has been reserved.

Jude 1:12-13

These are the hidden rocks in your love-feasts, feasting sumptuously together, feeding themselves without fear; clouds without water, borne along by winds; autumnal trees, without fruit, twice dead, plucked up by the roots;

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 all things whatsoever ye ask in prayer, believing, ye shall receive."
Mark 11:22
And Jesus, answering, saith to them, "Have the faith of God.
1 Timothy 2:8
I desire, therefore, that the men pray in every place, lifting up holy hands, without wrath and disputing;
Hebrews 11:6
And, apart from faith, it is impossible to please Him; for he that comes to God must believe that He is, and that He becomes a rewarder to those who seek after Him.

He

Ephesians 4:14
that we may no longer be babes, billow-tossed, and carried about with every wind of teaching, in the sleight of men, in the craftiness suited to the artifice of error;
Hebrews 10:23
let us hold fast the confession of the hope without wavering (for faithful is He Who promised);
Hebrews 13:9
Be not carried away by manifold and strange teachings; for it is good that the heart be established with grace, not with foods, in which those who occupied themselves were not profited.
2 Peter 2:17
These are fountains without water, and mists driven by a storm, for whom the blackness of darkness has been reserved.
Jude 1:12
These are the hidden rocks in your love-feasts, feasting sumptuously together, feeding themselves without fear; clouds without water, borne along by winds; autumnal trees, without fruit, twice dead, plucked up by the roots;