Matthew 24:35

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

Luke 1:50

and his mercy is to generations and generations of them that fear him.

Ephesians 1:6-7

to the praise of his glorious grace, which he bestowed upon us in the beloved,

Hebrews 6:18

that by two immutable things, in which it is impossible for God to lie, we might have strong consolation, who 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 immutable things, in which it is impossible for God to lie, we might have strong consolation, who fled to lay hold on the hope set before us,