9:51-56 The disciples did not consider that the conduct of the Samaritans was rather the effect of national prejudices and bigotry, than of enmity to the word and worship of God; and through they refused to receive Christ and his disciples, they did not ill use or injure them, so that the case was widely different from that of Ahaziah and Elijah. Nor were they aware that the gospel dispensation was to be marked by miracles of mercy. But above all, they were ignorant of the prevailing motives of their own hearts, which were pride and carnal ambition. Of this our Lord warned them. It is easy for us to say, Come, see our zeal for the Lord! and to think we are very faithful in his cause, when we are seeking our own objects, and even doing harm instead of good to others.

55, 56. know not what … spirit—The thing ye demand, though in keeping with the legal, is unsuited to the genius of the evangelical dispensation. The sparks of unholy indignation would seize readily enough on this example of Elias, though our Lord's rebuke (as is plain from Lu 9:56) is directed to the principle involved rather than the animal heat which doubtless prompted the reference. "It is a golden sentence of Tillotson, Let us never do anything for religion which is contrary to religion" [Webster and Wilkinson].