Albert Barnes on James 2:1

My brethren. Perhaps meaning brethren in two respects--as Jews, and as Christians. In both respects the form of address would be proper.

Have not the faith of our Lord Jesus Christ. Faith is the distinguishing thing in the Christian religion, for it is this by which man is justified, and hence it comes to be put for religion itself. 1Timm 3:9. The meaning here is, "Do not hold such views of the religion of Christ, as to lead you to manifest partiality to others on account of their difference of rank or outward circumstances."

The Lord of glory. The glorious Lord; he who is glorious himself, and who is encompassed with glory. 1Cor 2:8. The design here seems to be to show that the religion of such a Lord should be in no way dishonoured.

With respect of persons. That is, you are not to show respect of persons, or to evince partiality to others on account of their rank, wealth, apparel, etc. Compare Prov 24:23; 28:21; Lev 19:15; De 1:17; De 10:17; 2Ch 19:7; Ps 40:4. Acts 10:34; and Rom 2:11 to see the subject explained.

(a) "respect of persons" Prov 28:21; Jude 16