2 Timothy 2:13

if we are faithless, He remaineth faithful, for He cannot deny Himself.

Romans 3:3

For what, if some did disbelieve? Shall their disbelief make void the faithfulness of God?

Titus 1:2

upon hope of eternal life which God, Who cannot lie, promised before eternal times,

Matthew 24:35

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

Romans 9:6

But it is not as though the word of God has failed: for they are not all Israel, who are of Israel;

1 Corinthians 1:9

God is faithful, through Whom ye were called into the fellowship of His Son, Jesus Christ our Lord.

1 Thessalonians 5:24

Faithful is He Who calleth you, Who also will 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, through two immutable facts, in which it is impossible that God should lie, we may have strong encouragement, who fled for refuge to lay hold of the hope set before us;

Treasury of Scripture Knowledge

Summary

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

Bible References

Yet

Matthew 24:35
The heaven and the earth will pass away, but My words shall not pass away.
Romans 3:3
For what, if some did disbelieve? Shall their disbelief make void the faithfulness of God?
Romans 9:6
But it is not as though the word of God has failed: for they are not all Israel, who are of Israel;
1 Thessalonians 5:24
Faithful is He Who calleth you, Who also will do it.
2 Thessalonians 3:3
But the Lord is faithful, Who will establish you, and guard you from the evil one.

He cannot

Titus 1:2
upon hope of eternal life which God, Who cannot lie, promised before eternal times,
Hebrews 6:18
that, through two immutable facts, in which it is impossible that God should lie, we may have strong encouragement, who fled for refuge to lay hold of the hope set before us;