Answer: Man’s chief and highest end is to glorify God_1, and fully to enjoy him forever₂.

1. Romans 11:36; 1 Cor 10:31
2. Psalm 73:24-28; John 17:21-23

For further study see:

1. WSC 1: What is the chief end of man?
2. Dr. Kenneth G. Talbot explains WLC 1: (part 1)
   
3. Dr. Kenneth G. Talbot explains WLC 1: (part 2)