John Calvin Commentary Matthew 24:48

"But if that evil servant shall say in his heart, My lord tarrieth;" — Matthew 24:48 (ASV)

But if that wicked servant shall say in his heart. By these words, Christ briefly points out the source of that carelessness which creeps upon wicked servants. It is because they trust in a longer delay and thus, of their own accord, involve themselves in darkness. They imagine that the day when they must render an account will never come; and, under the pretext of Christ’s absence, they promise themselves that they will remain unpunished.

For the expectation of him, when it occurs to our minds, will certainly shake off sleep and, still more, will restrain us from being carried away by wicked sensuality. No exhortation, therefore, can be more powerful or efficacious than to represent to us that rigid tribunal which no one will be able to escape.

So that each of us may be careful to discharge his duty earnestly and keep himself strictly and modestly within his own limits, let us constantly make our minds familiar with the thought of that last and sudden coming of the Lord. Neglecting this thought leads the reprobate to indulge in wickedness.

At the same time, Christ takes a passing glance at the ease with which insolence grows once a man has shaken off the bridle and given himself up to sinning. For Christ does not portray a servant who is merely dissolute and worthless, but one who rises up in an outrageous manner to disturb the whole house, who wickedly abuses the power committed to him, exercises cruelty on his fellow-servants, and wastefully spends the property of his master, whom he treats with open ridicule. Lastly, to instill terror, he adds the punishment, which is exceptionally severe, for severe punishment is due to such unbounded wickedness.