2 Timothy 2:13

If we are unfaithful, He remains faithful, for He cannot prove false to Himself."

Romans 3:3

What then, if some of them have proved unfaithful? Can their unfaithfulness make null and void God's faithfulness?

Titus 1:2

in the hope of eternal life which God, who never lies, promised ages ago

Matthew 24:35

Sky and earth will pass away but my words will never pass away.

Romans 9:6

But it is not that God's word has failed. For not everybody that is descended from Israel really belongs to Israel,

1 Corinthians 1:9

God is entirely trustworthy, and it is He through whom you have been called into this fellowship with His Son, Jesus Christ our Lord.

1 Thessalonians 5:24

He who calls you is trustworthy and He will do this.

2 Thessalonians 3:3

But the Lord is to be trusted, and He will give you strength and guard you from the evil one.

Hebrews 6:18

so that by these two unchangeable things in which it is impossible for God to prove false, we who have taken refuge with Him may have encouragement strong enough to make us seize upon the hope that lies ahead of us.

Treasury of Scripture Knowledge

Summary

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

Bible References

Yet

Matthew 24:35
Sky and earth will pass away but my words will never pass away.
Romans 3:3
What then, if some of them have proved unfaithful? Can their unfaithfulness make null and void God's faithfulness?
Romans 9:6
But it is not that God's word has failed. For not everybody that is descended from Israel really belongs to Israel,
1 Thessalonians 5:24
He who calls you is trustworthy and He will do this.
2 Thessalonians 3:3
But the Lord is to be trusted, and He will give you strength and guard you from the evil one.

He cannot

Titus 1:2
in the hope of eternal life which God, who never lies, promised ages ago
Hebrews 6:18
so that by these two unchangeable things in which it is impossible for God to prove false, we who have taken refuge with Him may have encouragement strong enough to make us seize upon the hope that lies ahead of us.