Isaiah 65:16
so that he who blesses himself on the earth will bless himself in the God of truth; and he who swears on the earth will swear by the God of truth; because the former troubles are forgotten, and because they are hidden from my eyes.
World English Bible (Public Domain)
In context
Before · Isaiah 65:14–15
14Behold, my servants will sing for joy of heart, but you will cry for sorrow of heart, and will wail for anguish of spirit. 15You will leave your name for a curse to my chosen, and the Lord GOD will kill you. He will call his servants by another name,
16so that he who blesses himself on the earth will bless himself in the God of truth; and he who swears on the earth will swear by the God of truth; because the former troubles are forgotten, and because they are hidden from my eyes.