2 Timothy 2:13

If we are faithless, he remains faithful. He can't deny himself."

Numbers 23:19

God is not a man, that he should lie, nor the son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?

Romans 3:3

For what if some were without faith? Will their lack of faith nullify the faithfulness of God?

Titus 1:2

in hope of eternal life, which God, who can't lie, promised before time began;

Isaiah 25:1

Yahweh, you are my God. I will exalt you! I will praise your name, for you have done wonderful things, things planned long ago, in complete faithfulness and truth.

Matthew 24:35

Heaven and earth will pass away, but my words will not pass away.

Romans 9:6

But it is not as though the word of God has come to nothing. For they are not all Israel, that are of Israel.

1 Corinthians 1:9

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

1 Thessalonians 5:24

He who calls you is faithful, who will also do it.

2 Thessalonians 3:3

But the Lord is faithful, who will establish you, and guard you from the evil one.

Hebrews 6:18

that by two immutable things, in which it is impossible for God to lie, we may have a strong encouragement, who have fled for refuge to take hold of 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
Yahweh, you are my God. I will exalt you! I will praise your name, for you have done wonderful things, things planned long ago, in complete faithfulness and truth.
Matthew 24:35
Heaven and earth will pass away, but my words will not pass away.
Romans 3:3
For what if some were without faith? Will their lack of faith nullify the faithfulness of God?
Romans 9:6
But it is not as though the word of God has come to nothing. For they are not all Israel, that are of Israel.
1 Thessalonians 5:24
He who calls you is faithful, who will also do it.
2 Thessalonians 3:3
But the Lord is faithful, who will establish you, and guard you from the evil one.

He cannot

Numbers 23:19
God is not a man, that he should lie, nor the son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?
Titus 1:2
in hope of eternal life, which God, who can't lie, promised before time began;
Hebrews 6:18
that by two immutable things, in which it is impossible for God to lie, we may have a strong encouragement, who have fled for refuge to take hold of the hope set before us.

General references

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