Albert Barnes' Notes on the Whole Bible - Galatians 2:9
And when James, Cephas, and John, who seemed to be pillars - That is, pillars or supports in the church. The word rendered “pillars” (στύλοι stuloi) means properly firm support; then persons of influence and authority, as in a church, or that support a church as a pillar or column does an edifice. In regard to James, see the note at Galatians 1:19; compare Acts 15:13. Cephas or Peter was the most aged of the apostles, and regarded as at the head of the apostolical college. John was the beloved... read more
Albert Barnes' Notes on the Whole Bible - Galatians 2:8
For he that wrought effectually in Peter ... - Or by the means or agency of Peter. The argument here is, that the same effects had been produced under the ministry of Paul among the Gentiles which had been under the preaching of Peter among the Jews. It is inferred, therefore, that God had called both to the apostolic office; see this argument illustrated in the notes at Acts 11:17.The same was mighty in me ... - In enabling me to work miracles, and in the success which attended the ministry. read more