Servant] A title used in the OT. of those devoted to a special work for God: cp. Joshua 24:29; Psalms 36 (title) Jeremiah 7:25; Daniel 9:11; Zechariah 3:8. St. Paul claims a similar place in the New Covenant. Servant of Jesus Christ] cp. OT. expression 'servant of God'; one of many undesigned testimonies to the Apostle's belief in the divinity of Christ: cp. Romans 9:5; Romans 10:12.
Called] i.e. chosen by Christ. He emphasises this, because a party of Judaising Christians, who opposed the doctrine of salvation by faith, and held that circumcision was of perpetual obligation, denied his apostleship: cp. 1 Corinthians 9:1; Galatians 1:1 : see Intro. Gal. Apostle] see on Romans 16:7. Separated] cp. Acts 13:2; Galatians 1:15