Return to the subject of temptation. James 1:2 taught that temptation regarded as an opportunity should be a cause for joy. James 1:12 teaches that the endurance of temptation brings a blessing from God, even the crown of life.
Comp. Revelation 2:10, the only other place in the New Testament where the "crown of life" is mentioned; and there also it stands in close connection with the endurance of temptation. Elsewhere we read of the "crown of righteousness" (2 Timothy 4:8), and the "crown of glory" (1 Peter 5:4).
The genitive ( τὸν στέφανον τῆς ζωῆς) is probably the gen. epex.," the crown, which is life." ὁ κύριος of the Received Text has but slight authority. It is wanting in A, B, א, ff, and is deleted by the Revisers, following all recent editors.
Render, which he promised, etc. The subject is easily understood, and therefore, as frequently in Jewish writings (e.g. 1 Maccabees), omitted from motives of reverence.