Salute every saint in Christ Jesus. The brethren which are with me greet you.
Salute every saint - individually.
The brethren which are with me - perhaps Jewish believers (Acts 28:21). I think Philippians 2:20 precludes our thinking of 'closer friends,' 'colleagues in the ministry' (Alford): he had only one close friend with him-namely, Timothy.
Greet - salute you.