John Calvin on James 2:9

When, in the second place, he says, that those who had respect of persons were convinced, or reproved by the law, the law is taken according to its proper meaning. For since we are bidden by God’s command to embrace all mortals, every one who, with a few exceptions, rejects all the rest, breaks the bond of God, and inverts also his order, and is, therefore, rightly called a transgressor of the law.