Psalms 89:2

For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens.
— Psalms 89:2, King James Version

In other translations

World English Bible (WEB)

I indeed declare, "Love stands firm forever. You established the heavens. Your faithfulness is in them."

American Standard Version (ASV)

For I have said, Mercy shall be built up for ever; Thy faithfulness wilt thou establish in the very heavens.

Young's Literal Translation (YLT)

For I said, 'To the age is kindness built, The heavens! Thou dost establish Thy faithfulness in them.'