Ecclesiastes 11:9

Rejoice, O young man, in thy youth, the general admonition of the preceding verses being addressed to young people in particular, as living in that period of life which is especially favorable to cheerful enjoyment, and let thy heart cheer thee in the days of thy youth, with the proper happiness in the midst of the turmoil and troubles of this present world, and walk in the ways of thine heart, in seeking enjoyment of the right kind, such as is acceptable to the Lord, and in the sight of thine eyes, in innocent pleasures and pastimes, the eyes being trained for proper observance of God's rules of conduct; but know thou that for all these things God will bring thee into Judgment, wherefore a most careful and circumspect conduct, a most godly caution, is required at all times. It is necessary to serve the Lord with fear and to rejoice with trembling, Psalms 2:11; Philippians 2:12.