James 1:9 - Matthew Poole's English Annotations on the Holy Bible

Let the brother; i.e. the believer, (for to such he writes), all believers, or saints, being brethren in Christ, 1 Corinthians 16:20 1 Thessalonians 5:26 1 Timothy 6:2. Of low degree; the Greek word signifies both lowliness of mind and lowness of condition, (as the Hebrew word doth, to which it answers), but here is to be understood of the latter, \as Luke 1:48\ but especially of such a low estate as a man is brought into for Christ's sake and the gospel s. Rojoice in that he is exalted; either exalted to be a brother, a member of Christ, a child of God, and heir of glory, which is the greatest preferment; or exalted to the honour of suffering for Christ: see Acts 5:41 Romans 5:3.