knew what his younger sonne] That is, Ham or Canaan (for some thinke he was called the younger sonne, as Othniel is called Calebs brother, being the sonne of his brother, Judg. Chap. 1. 13.) had done unto him; Noah finding the garment upon him which before he had not, he might inquire, and did finde out what was done both by his bad sonne Ham, and by his two good sonnes Shem and Japhet: Good offices are not lost though they be not alwayes observed while they are acted; and many times when they are offensive in the act, they produce a good effect afterward: For this, see Proverbs 28:23.