NET
20 after they were disobedient long ago when God patiently waited in the days of Noah as an ark was being constructed. In the ark a few, that is eight souls, were delivered through water.
Darby
20 heretofore disobedient, when the longsuffering of God waited in [the] days of Noah while the ark was preparing, into which few, that is, eight souls, were saved through water:
KJV
20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.