John Calvin on Acts 21:15-16

15. When we had taken up our burdens. Paul’s companions declare, that when they went about to call back Paul from danger, they did rather care for the common safety of the Church, than every man for his own life. For after they had taken the repulse, they do not refuse to take part with him in the same danger; and yet this was a plausible excuse that they were bound by no law to be hauled to suffer death, through one man’s stubbornness. And this is truly to bring our affections in subjection to God, when we are terrified with no fear, but every one of us endeavoreth, so much as he is able, to further that which we know doth please him. Also, it appeareth more plainly what great ferventness of godliness was in the rest, who of their own accord accompany him, and bring him an host; whereas, notwithstanding, they might well have feared many discommodities.