New Defender's Study Bible Notes
18:8 shall he find faith. Not faith in general, but “the faith.” That is, the true revealed Christian faith. This seems to be a rhetorical question, rather than one of uncertainty, for surely by this time the Lord’s omniscience concerning the future had been restored. At the same time, it both warns us concerning the serious scope of latter-day apostasy and also urges us to warn all men of the wrath to come while there is still time to repent.