2 Timothy 2:13

if we are unfaithful, yet he remains faithful; he cannot deny himself.

Numbers 23:19

God is not a man, that he should lie; neither the son of man, that he should repent; he said and shall he not do it? He spoke and shall he not execute it?

Romans 3:3

For what if some of them did not believe? Shall their unbelief have made the truth of God without effect?

Titus 1:2

for the hope of eternal life, which God, who cannot lie, promised before the times of the ages

Isaiah 25:1

O LORD, thou art my God; I will exalt thee; I will praise thy name for thou hast done wonders, the counsels of old, the truth unchanging.

Matthew 24:35

The heaven and the earth shall pass away, but my words shall not pass away.

Romans 9:6

Not as though the word of God has been deficient. For not all the descendants of Israel are Israelites;

1 Corinthians 1:9

God is faithful, by whom ye were called into the fellowship of his Son Jesus Christ our Lord.

1 Thessalonians 5:24

Faithful is he that has called you, who will also do it.

2 Thessalonians 3:3

But the Lord is faithful, who shall confirm you and keep you from evil.

Hebrews 6:18

that by two immutable things, in which it is impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope 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 exalt thee; I will praise thy name for thou hast done wonders, the counsels of old, the truth unchanging.
Matthew 24:35
The heaven and the earth shall pass away, but my words shall not pass away.
Romans 3:3
For what if some of them did not believe? Shall their unbelief have made the truth of God without effect?
Romans 9:6
Not as though the word of God has been deficient. For not all the descendants of Israel are Israelites;
1 Thessalonians 5:24
Faithful is he that has called you, who will also do it.
2 Thessalonians 3:3
But the Lord is faithful, who shall confirm you and keep you from evil.

He cannot

Numbers 23:19
God is not a man, that he should lie; neither the son of man, that he should repent; he said and shall he not do it? He spoke and shall he not execute it?
Titus 1:2
for the hope of eternal life, which God, who cannot lie, promised before the times of the ages
Hebrews 6:18
that by two immutable things, in which it is impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us,

General references

Jeremiah 36:28
Take thee again another roll, and write in it all the former words that were in the first roll, which Jehoiakim the king of Judah has burned.