McGarvey and Pendleton Commentaries
Acts 12 - Introduction
XII: 1, 2. The historian does not follow Barnabas and Saul in their tour through the districts in Judea, but, leaving them for awhile, introduces a very interesting episode concerning events that were then transpiring in Jerusalem. (1) " Now, about that time, Herod the king stretched forth his hand to afflict certain persons of the Church, (2) and killed James the brother of John with the sword. " The persecutions which we have hitherto noticed were conducted by religious partisans in Jerusalem, without any active assistance on the part of the civil authorities. We are now introduced to one in which the reigning prince is the leader, while the old enemies of the truth are working behind the curtain, if at all.
This Herod was a grandson of that Herod by whom the infants of Bethlehem were slaughtered, and a nephew of "Herod the Tetrarch," by whom John the Immerser was beheaded. He grew up in Rome, where he wasted what fortune he had inherited in princely extravagance; but while doing so he acquired an intimacy with Caius Cæsar, afterward the famous Caligula of history. When the latter ascended the throne, at the death of Tiberius, he elevated his friend Agrippa, as this Herod was most usually called, to a kingdom, which was subsequently enlarged by Claudius until it embraced all the territory ruled by his grandfather Herod the Great. He was now in the zenith of his power, and living in the utmost magnificence. Why he undertook this persecution it is difficult to tell, unless he was instigated to it by the old enemies of the Church. This appears most probable from Luke's statement below, that he seized Peter because he saw that the death of James pleased the Jews.
A number of brethren suffered in this persecution, though James the brother of John is the only one who is said to have suffered death. He is designated as the "brother of John" to distinguish him from the other James, who is the author of the epistle bearing this name. He was the first of the apostles to suffer death, and his brother John was the last. In the death of both were fulfilled the words of Jesus, uttered on a memorable occasion, when they asked him for a seat, one at his right hand, and the other at his left. He asked them if they were able to undergo the immersion which he would undergo. They said, "We are able." He replied, "You shall, indeed, drink of my cup, and be immersed in the immersion in which I am immersed; but to sit on my right hand and on my left is not mine to give, but to them for whom it is prepared by my Father." As the sword of the executioner was made bare, and the neck of James laid upon the block, he could but remember these words. He understood, too, far better than when he first made the request, what it is to sit at the right hand of Jesus.
Why James was selected for this murderous example, in preference to any other of the apostles, we are not informed; but we have already seen that the brunt of persecution uniformly fell upon those most prominent in the scenes which were the immediate occasion of it. This consideration gives some ground for the conclusion that, though Peter and John had hitherto acted the most prominent part in Jerusalem, at this time James stood in the foreground in the conflict with the unbelieving Jews.