But to sit on my right hand, or on my left, is not mine to give to you, but to them for whom it is prepared.

“(ubi sup.) Where two questions are raised, one is, whether a seat on His right hand is prepared for any one; the other, whether the Lord of all has it not in His power to give it to those for whom it is prepared. To the first then we say, that no one sits on His right hand or on His left, for that throne is inaccessible to a creature. How then did He say, To sit on my right hand or on my left is not mine to give you, as though it belonged to some who were to sit there? He however answers the thoughts of those who asked Him, condescending to their meaning; for they did not know that lofty throne and seat, which is on the right hand of the Father, but sought one thing alone, that is, to possess the chief place, and to be set over others. And since they had heard it said of the Apostles, that they were to sit on twelve thrones, they begged for a place higher than all the rest, not knowing what was said. To the second question we must say, that such a gift does not transcend the power of the Son of God, but what is said by Matthew (Matt. 20:23), it is prepared by My Father, is the same as if it were said, “by Me,” wherefore also Mark did not say here, by My Father. What therefore Christ says here is this, Ye shall die, He says, for Me, but this is not enough to enable you to obtain the highest place, for if another person comes possessing besides martyrdom all other virtues, he will possess much more than you; for the chief place is prepared for those, who by works are enabled to become the first. Thus then the Lord instructed them not to trouble themselves vainly and absurdly for high places; at the same time He would not have them made sad.”

“(ubi sup.) A question is raised, however, how James and John drank the cup of martyrdom, or how they were baptized with the baptism of the Lord, when the Scripture relates, that only James the Apostle was beheaded by Herod whilst John finished his life by a natural death. But if we read ecclesiastical histories, in which it is related, that he also on account of the witness which he bore was cast into a cauldron of burning oil, and was immediately sent away to the island of Patmos, we shall then see that the spirit of martyrdom was in him, and that John drank the cup of confession, which the Three Children also drank in the furnace of fire, though the persecutor did not spill their blood. It goes on: But to sit on my right hand and on my left hand is not mine to give, but it shall be given to them for whom it is prepared.”

“But so shall it not be among you,.... Or "so let it not be", as in many copies; or as the Persic version renders it, "it ought not to be so among you"; such a lordly spirit does not become you; this is heathenish: but whosoever will be great among you shall be, as in Matthew "let him", Mat 20:26, be your minister. This was just the reverse of what the two disciples were seeking for; they were indeed for being ministers but then they were for being prime ministers of state; and would have had all the rest subject to them and attendants on them to be sent out and employed as they should think fit: whereas the only way to preferment and greatness in Christ's kingdom, or rather Gospel church state, is to labour, in the work, of the ministry more abundantly than others; to take great pains and endure great hardships in order to bring great glory to God, and do great good to the souls of men; See Gill on Mat 20:26.”