James 1:6

But he should ask in faith, without doubting, because the person who doubts [that he will receive wisdom] is like an ocean wave that is driven and tossed by the wind.

Ephesians 4:14

Then we will no longer be [spiritual] babies, tossed back and forth [by waves], and blown around by every wind of [false] teaching, [deceived] by the clever trickery of people using deceptive schemes.

Matthew 21:21-22

Jesus answered, "Truly I tell you, if you have faith, without doubting, you will not only [be able to] do what was done to this fig tree, but even if you tell this mountain, 'Be lifted up and thrown into the ocean,' it will happen.

Mark 11:22-24

Jesus replied to him, "You should have faith in God.

1 Timothy 2:8

Therefore, I want the men to pray in every place [i.e., in all worship assemblies. See verses 1-2], lifting up holy hands without being angry or argumentative. [Note: This passage stresses both the physical and spiritual aspects of prayer].

Hebrews 10:23

[So], we should hold on firmly to the profession of our hope [in God], without wavering from it, for God is faithful to His promises.

Hebrews 11:6

And unless one has faith, it is impossible for him to be pleasing to God, for the person who comes to God must believe that He exists and that He rewards those who seek Him.

Hebrews 13:9

Do not continue to be swept off your course by all kinds of strange teachings. For it is good for your hearts to be strengthened by God's unearned favor [upon you] and not by [keeping regulations about] foods, which do not benefit those who observe them.

2 Peter 2:17

Such people are like springs that give no water and clouds driven by the winds. [Only] the blackest darkness awaits them.

Jude 1:12-13

These people are like rotten spots [contaminating the food] at your love feasts, while they gorge themselves without fear [i.e., unashamed of their selfish indulgence]. [Note: This passage may mean "like selfish shepherds, looking out only for themselves, they eat the grain set out for the animals"]. They are like clouds that blow over without producing rain; [they are like] trees in the fall that do not produce any fruit and have been uprooted, [thus] being dead twice [i.e., fruitless and rootless].

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 everything you ask for in prayer you will receive, if you have [enough] faith."
Mark 11:22
Jesus replied to him, "You should have faith in God.
1 Timothy 2:8
Therefore, I want the men to pray in every place [i.e., in all worship assemblies. See verses 1-2], lifting up holy hands without being angry or argumentative. [Note: This passage stresses both the physical and spiritual aspects of prayer].
Hebrews 11:6
And unless one has faith, it is impossible for him to be pleasing to God, for the person who comes to God must believe that He exists and that He rewards those who seek Him.

He

Ephesians 4:14
Then we will no longer be [spiritual] babies, tossed back and forth [by waves], and blown around by every wind of [false] teaching, [deceived] by the clever trickery of people using deceptive schemes.
Hebrews 10:23
[So], we should hold on firmly to the profession of our hope [in God], without wavering from it, for God is faithful to His promises.
Hebrews 13:9
Do not continue to be swept off your course by all kinds of strange teachings. For it is good for your hearts to be strengthened by God's unearned favor [upon you] and not by [keeping regulations about] foods, which do not benefit those who observe them.
2 Peter 2:17
Such people are like springs that give no water and clouds driven by the winds. [Only] the blackest darkness awaits them.
Jude 1:12
These people are like rotten spots [contaminating the food] at your love feasts, while they gorge themselves without fear [i.e., unashamed of their selfish indulgence]. [Note: This passage may mean "like selfish shepherds, looking out only for themselves, they eat the grain set out for the animals"]. They are like clouds that blow over without producing rain; [they are like] trees in the fall that do not produce any fruit and have been uprooted, [thus] being dead twice [i.e., fruitless and rootless].