17:24-27 Peter felt sure that his Master was ready to do what was right. Christ spoke first to give him proof that no thought can be withholden from him. We must never decline our duty for fear of giving offence; but we must sometimes deny ourselves in our worldly interests, rather than give offence. However the money was lodged in the fish, He who knows all things alone could know it, and only almighty power could bring it to Peter's hook. The power and the poverty of Christ should be mentioned together. If called by providence to be poor, like our Lord, let us trust in his power, and our God shall supply all our need, according to his riches in glory by Christ Jesus. In the way of obedience, in the course, perhaps, of our usual calling, as he helped Peter, so he will help us. And if any sudden call should occur, which we are not prepared to meet, let us not apply to others, till we first seek Christ.

25. He saith, yes—that is, "To be sure He does"; as if eager to remove even the suspicion of the contrary. If Peter knew—as surely he did—that there was at this time no money in the bag, this reply must be regarded as a great act of faith in his Master.

And when he was come into the house—Peter's.

Jesus prevented him—anticipated him; according to the old sense of the word "prevent."

saying, What thinkest thou, Simon?—using his family name for familiarity.

of whom do the kings of the earth take custom—meaning custom on goods exported or imported.

or tribute—meaning the poll-tax, payable to the Romans by everyone whose name was in the census. This, therefore, it will be observed, was strictly a civil tax.

of their own children, or of strangers—This cannot mean "foreigners," from whom sovereigns certainly do not raise taxes, but those who are not of their own family, that is, their subjects.