Verse 21 The like figure whereunto; that is, the antitype whereunto. The meaning is, that believers are now saved through baptism, in a manner somewhat analogous to that in which Noah and his family were saved in the ark. Of course, baptism is, in this case, regarded as the indication and pledge of the inward spiritual change, in which alone all its meaning and efficacy consists.-- Filth of the flesh; uncleanness of the flesh; that is, ceremonial uncleanness, like that provided against in the Mosaic law. The meaning is, that baptism has no ceremonial efficacy. Its power and value depend upon there being a good conscience toward God within, corresponding to the outward symbol.