Psalm 95:10 in the King James Version
Forty years long was I grieved with this generation, and said, It is a people that do err in their heart, and they have not known my ways:
Context
9 when your fathers tempted me, tested me, and saw my work.
10 Forty long years I was grieved with that generation, and said, “They are a people who err in their heart. They have not known my ways.”
11 Therefore I swore in my wrath, “They won’t enter into my rest.”