Commentaries:
Jamieson, Fausset, and Brown
The grand inference of the whole book.
Fear God—The antidote to following creature idols, and "vanities," whether self-righteousness (Ecclesiastes 7:16, Ecclesiastes 7:18), or wicked oppression and other evils (Ecclesiastes 8:12-13), or mad mirth (Ecclesiastes 2:2; Ecclesiastes 7:2-5), or self-mortifying avarice (Ecclesiastes 8:13, Ecclesiastes 8:17), or youth spent without God (Ecclesiastes 11:9; Ecclesiastes 12:1).
this is the whole duty of man—literally, "this is the whole man," the full ideal of man, as originally contemplated, realized wholly by Jesus Christ alone; and, through Him, by saints now in part, hereafter perfectly (I John 3:22-24; Revelation 22:14).
Other Jamieson, Fausset, and Brown entries containing Ecclesiastes 12:13:
Ecclesiastes 5:7
Ecclesiastes 12:1
2 Corinthians 5:11
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