Charles Spurgeon Commentary Ecclesiastes 12:13

"[This is] the end of the matter; all hath been heard: fear God, and keep his commandments; for this is the whole [duty] of man." — Ecclesiastes 12:13 (ASV)

Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man. (Ecclesiastes 12:13)

Reverent walking before the Most High; reconciliation to him so that we can thus walk and thus live, and all this proved by a life of obedience to his commandments: This is the whole duty of man.