2 Timothy 2:13

if we are not stedfast, he remaineth stedfast; to deny himself he is not able.

Numbers 23:19

God is not a man -- and lieth, And a son of man -- and repenteth! Hath He said -- and doth He not do it? And spoken -- and doth He not confirm it?

Romans 3:3

for what, if certain were faithless? shall their faithlessness the faithfulness of god make useless?

Titus 1:2

upon hope of life age-during, which God, who doth not lie, did promise before times of ages,

Isaiah 25:1

O Jehovah, my God art Thou, I exalt Thee, I confess Thy name, For Thou hast done a wonderful thing, Counsels of old, stedfastness, O stedfast One.

Matthew 24:35

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

Romans 9:6

And it is not possible that the word of God hath failed; for not all who are of Israel are these Israel;

1 Corinthians 1:9

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

1 Thessalonians 5:24

stedfast is He who is calling you, who also will do it.

2 Thessalonians 3:3

and stedfast is the Lord, who shall establish you, and shall guard you from the evil;

Hebrews 6:18

that through two immutable things, in which it is impossible for God to lie, a strong comfort we may have who did flee for refuge to lay hold on 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 Jehovah, my God art Thou, I exalt Thee, I confess Thy name, For Thou hast done a wonderful thing, Counsels of old, stedfastness, O stedfast One.
Matthew 24:35
The heaven and the earth shall pass away, but my words shall not pass away.
Romans 3:3
for what, if certain were faithless? shall their faithlessness the faithfulness of god make useless?
Romans 9:6
And it is not possible that the word of God hath failed; for not all who are of Israel are these Israel;
1 Thessalonians 5:24
stedfast is He who is calling you, who also will do it.
2 Thessalonians 3:3
and stedfast is the Lord, who shall establish you, and shall guard you from the evil;

He cannot

Numbers 23:19
God is not a man -- and lieth, And a son of man -- and repenteth! Hath He said -- and doth He not do it? And spoken -- and doth He not confirm it?
Titus 1:2
upon hope of life age-during, which God, who doth not lie, did promise before times of ages,
Hebrews 6:18
that through two immutable things, in which it is impossible for God to lie, a strong comfort we may have who did flee for refuge to lay hold on the hope set before us,

General references

Jeremiah 36:28
'Turn, take to thee another roll, and write on it all the former words that were on the first roll, that Jehoiakim king of Judah burnt,