Ecclesiastes 12:11-13

Revised Standard Version Catholic Edition

¹¹ The sayings of the wise are like goads, and like nails firmly fixed are the collected sayings which are given by one Shepherd. ¹² My son, beware of anything beyond these. Of making many books there is no end, and much study is a weariness of the flesh.

¹³ The end of the matter; all has been heard. Fear God, and keep his commandments; for this is the whole duty of man.^[a]