"When you make a promise to God, don't delay in following through, for God takes no pleasure in fools. Keep all the promises you make to Him. It is better to say nothing then to make promises and not keep it. " (Ecc 5: 4,5)
"Young people, it's wonderful to be young. Enjoy every minute of it. Do everything you want to do; take it all in. But remember that you must give an account to God in everything you do." (Ecc 11:9)