Adam Clarke on Ecclesiastes 7:17

Be not overmuch wicked, neither be thou foolish: why shouldest thou die before thy time? - אל תרשע הרבה al tirsha harbeh. Do not multiply wickedness, do not add direct opposition to godliness to the rest of your crimes. Why should you provoke God to destroy you before your time? Perdition will come soon enough. If you will not turn from your sins, and avoid it finally, yet keep out of it as long as you can.

It cannot be supposed, except by those who are totally unacquainted with the nature of true religion, that a man may have too much holiness, too much of the life of God in his soul! And yet a learned doctor, in three sermons on this text, has endeavored to show, out-doing Solomon's infidel, "the sin, folly, and danger of being righteous overmuch." O rare darkness!