Matthew 24:35

[Although] the sky and the earth will pass away [See II Pet. 3:10], my words will not pass away [i.e., they will certainly come true].

Luke 1:50

He shows mercy to generation after generation of people who have reverence for Him.

Ephesians 1:6-7

so that we would praise His glorious, unearned favor, which was freely given to us through the One whom God loved [i.e., Christ].

Hebrews 6:18

He did this so that by two unchangeable things [i.e., His promise and His oath], (and it is impossible for God to lie), we, who have fled [to God] for refuge, could be greatly encouraged to take hold of the hope set before us [i.e., the hope of never ending life].

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
[Although] the sky and the earth will pass away [See II Pet. 3:10], my words will not pass away [i.e., they will certainly come true].
Hebrews 6:18
He did this so that by two unchangeable things [i.e., His promise and His oath], (and it is impossible for God to lie), we, who have fled [to God] for refuge, could be greatly encouraged to take hold of the hope set before us [i.e., the hope of never ending life].