Hebrews 10:23

Let us hold fast to the confession of [our] hope without wavering, for the one who promised [is] faithful.

1 Corinthians 1:9

God [is] faithful, by whom you were called to fellowship with his Son Jesus Christ our Lord.

Hebrews 3:6

but Christ [was faithful] as a son over his house, whose house we are, if we hold fast to our confidence and the hope we can be proud of.

Hebrews 11:11

By faith also, {with Sarah}, he received {the ability to procreate} even {past the normal age}, because he regarded the one who had promised [to be] faithful.

1 Corinthians 10:13

Temptation has not come upon you except [what is] common to humanity. But God [is] faithful, who will not permit you to be tempted beyond what you are able, but will also make a way out together with the temptation, [so that you] may be able to endure [it].

Hebrews 4:14

Therefore, [because we] have a great high priest who has gone through the heavens, Jesus the Son of God, let us hold fast to our confession.

1 Thessalonians 5:24

The one who calls you [is] faithful, who also will do [this].

2 Thessalonians 3:3

But the Lord is faithful, who will strengthen you and guard [you] from the evil one.

Titus 1:2

in the hope of eternal life which God, who does not lie, promised before eternal ages,

Hebrews 3:14

For we have become partners of Christ, if indeed we hold fast the beginning of [our] commitment steadfast until the end,

Hebrews 6:18

in order that through two unchangeable things, in which [it is] impossible for God to lie, we who have taken refuge may have powerful encouragement to hold fast to the hope set before [us],

James 1:6

But let him ask for [it] in faith, without any doubting, for the one who doubts is like the surf of the sea, driven by the wind and tossed about.

Revelation 3:11

I am coming quickly! Hold fast to what you have, so that no one may take away your crown.

Treasury of Scripture Knowledge

Summary

Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)

Wavering

General references

Bible References

Wavering

James 1:6
But let him ask for [it] in faith, without any doubting, for the one who doubts is like the surf of the sea, driven by the wind and tossed about.

For

Hebrews 6:18
in order that through two unchangeable things, in which [it is] impossible for God to lie, we who have taken refuge may have powerful encouragement to hold fast to the hope set before [us],
Hebrews 11:11
By faith also, {with Sarah}, he received {the ability to procreate} even {past the normal age}, because he regarded the one who had promised [to be] faithful.
1 Corinthians 1:9
God [is] faithful, by whom you were called to fellowship with his Son Jesus Christ our Lord.
1 Corinthians 10:13
Temptation has not come upon you except [what is] common to humanity. But God [is] faithful, who will not permit you to be tempted beyond what you are able, but will also make a way out together with the temptation, [so that you] may be able to endure [it].
1 Thessalonians 5:24
The one who calls you [is] faithful, who also will do [this].
2 Thessalonians 3:3
But the Lord is faithful, who will strengthen you and guard [you] from the evil one.
Titus 1:2
in the hope of eternal life which God, who does not lie, promised before eternal ages,

General references

Mark 15:38
And the curtain of the temple was torn in two from top to bottom.