Matthew 24:35

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

Luke 1:50

and his mercy is from generation to generation on them that fear him.

Ephesians 1:6-7

to the praise of the glory of his grace, which he freely bestowed on us in the Beloved;

Hebrews 6:18

that by two immutable things, in which it is impossible for God to lie, we may have strong encouragement, who have fled for refuge to lay hold upon the hope set before us;

Treasury of Scripture Knowledge

Summary

For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens.

Faithfulness ps 89

Bible References

Faithfulness ps 89

Matthew 24:35
Heaven and earth will pass away, but my words will not pass away.
Hebrews 6:18
that by two immutable things, in which it is impossible for God to lie, we may have strong encouragement, who have fled for refuge to lay hold upon the hope set before us;