Ecclesiastes 7:22 KJV
For oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.
Ecclesiastes 7:22, King James Version
In context
21 Also take no heed unto all words that are spoken; lest thou hear thy servant curse thee:
22 For oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.
23 All this have I proved by wisdom: I said, I will be wise; but it was far from me.