Making their hearts merry, i.e. refreshing themselves with the provisions set before them.
Certain sons of Belial; wicked and licentious men: see Deu_13:13.
That we may know him; an ambiguous expression, whereby they pretended only a desire to know and see what person he had brought among them, and yet carry on their wicked design of knowing him carnally. Compare Gen_19:5, where the same phrase is used in that sense upon a like occasion. But though they name only the man, yet it is plain from the following relation that their design was principally upon the woman, and therefore under the name of the man, they comprehend those that belong to him.