2 Timothy 2:13

If we believe not, yet abideth he faithful. He cannot deny himself.

Numbers 23:19

The Lord God is not a man, that he can lie; neither the son of a man, that he can repent! Should he say, and not do? Or should he speak, and not make it good?

Romans 3:3

What, then, though some of them did not believe? Shall their unbelief make the promise of God without effect?

Titus 1:2

which is after godliness upon the hope of eternal life; which life God, that cannot lie, hath promised before the world began:

Isaiah 25:1

O LORD, thou art my God, I will praise thee, and magnify thy name: For thou bringest marvelous things to pass, according to thine old counsels, truly and steadfastly.

Matthew 24:35

Heaven and earth shall perish: but my words shall abide.

Romans 9:6

I speak not these things as though the words of God had taken none effect. For they are not all Israelites which came of Israel;

1 Corinthians 1:9

For God is faithful, by whom ye are called unto the fellowship of his son Jesus Christ our Lord.

1 Thessalonians 5:24

Faithful is he, which called you: which will also do it.

2 Thessalonians 3:3

but the Lord is faithful, which shall establish you, and keep you from evil.

Hebrews 6:18

that by two immutable things - in which it was impossible that God should lie - we might have perfect consolation, which have fled, for to hold fast the hope that is set before us:

Treasury of Scripture Knowledge

Summary

If we believe not, yet he abideth faithful: he cannot deny himself.

General references

Bible References

Yet

Isaiah 25:1
O LORD, thou art my God, I will praise thee, and magnify thy name: For thou bringest marvelous things to pass, according to thine old counsels, truly and steadfastly.
Matthew 24:35
Heaven and earth shall perish: but my words shall abide.
Romans 3:3
What, then, though some of them did not believe? Shall their unbelief make the promise of God without effect?
Romans 9:6
I speak not these things as though the words of God had taken none effect. For they are not all Israelites which came of Israel;
1 Thessalonians 5:24
Faithful is he, which called you: which will also do it.
2 Thessalonians 3:3
but the Lord is faithful, which shall establish you, and keep you from evil.

He cannot

Numbers 23:19
The Lord God is not a man, that he can lie; neither the son of a man, that he can repent! Should he say, and not do? Or should he speak, and not make it good?
Titus 1:2
which is after godliness upon the hope of eternal life; which life God, that cannot lie, hath promised before the world began:
Hebrews 6:18
that by two immutable things - in which it was impossible that God should lie - we might have perfect consolation, which have fled, for to hold fast the hope that is set before us:

General references

Jeremiah 36:28
"Take another book, and write in it all the foresaid sermons that were written in the first book, which Jehoiakim the king of Judah hath burnt.