Matthew 24:35

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

Luke 1:50

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

Ephesians 1:6-7

To the praise of the glory of his grace,

Hebrews 6:18

That by two unchangeable things, in which it was impossible for God to lie, we might have strong consolation, who have fled to lay hold on 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 shall pass away, but my words shall not pass away.
Hebrews 6:18
That by two unchangeable things, in which it was impossible for God to lie, we might have strong consolation, who have fled to lay hold on the hope set before us: