يعقوب ١:٢٤

beholdeth--more literally, "he contemplated himself and hath gone his way," that is, no sooner has he contemplated his image than he is gone his way (Jam 1:11). "Contemplate" answers to hearing the word: "goeth his way," to relaxing the attention after hearing--letting the mind go elsewhere, and the interest of the thing heard pass away: then forgetfulness follows [ALFORD] (Compare Eze 33:31). "Contemplate" here, and in Jam 1:23, implies that, though cursory, yet some knowledge of one's self, at least for the time, is imparted in hearing the word (Co1 14:24). and . . . and--The repetition expresses hastiness joined with levity [BENGEL]. forgetteth what manner of man he was--in the mirror. Forgetfulness is no excuse (Jam 1:25; Pe2 1:9).

After the inscription and salutation (Jam 1:1) Christians are taught how to conduct themselves when under the cross. Several graces and duties are recommended; and those who endure their trials and afflictions as the apostle here directs are pronounced blessed and are assured of a glorious reward (Jam 1:2-12). But those sins which bring sufferings, or the weakness and faults men are chargeable with under them, are by no means to be imputed to God, who cannot be the author of sin, but is the author of all good (Jam 1:13-18). All passion, and rash anger, and vile affections, ought to be suppressed. The word of God should be made our chief study: and what we hear and know of it we must take care to practise, otherwise our religion will prove but a vain thing. To this is added an account wherein pure religion consists (Jam 1:19-27).

1:24 forget what you look like: The problem is not the poor quality of an ancient mirror but the inattention of the viewer (cp. Matt 7:24-27).