Matthew Poole and continuators on Acts 12:2

2 And he killed James the brother of John with the sword.

Who had especially the care of the Church at Ierusalem; one eminent amongst the Apostles, and one of the Sons of Thunder, (or Boanerges) for his zealous and earnest Preaching, and therefore the more hated by Herod; so that which our Saviour had foretold him, came now to pass, Matth. 20.23. that he drank of the cup our Saviour did drink of. There was another Iames, who wrote the Epistle, known by his name, and was called Iames the less; because as some think, he was brought to the knowledge of Christ after the other, of whom we read, Mark 15.40.

Marginal references: Mat. 4.21.