13 Now all has been heard; here is the conclusion of the matter: Fear God and keep his commandments, for this is the duty of all mankind.

Read Ecclesiastes 12:13 Using Other Translations

Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man.
The end of the matter; all has been heard. Fear God and keep his commandments, for this is the whole duty of man.
That’s the whole story. Here now is my final conclusion: Fear God and obey his commands, for this is everyone’s duty.