Which imagine mischiefs in their heart - Here the language is changed to the plural number in the Hebrew, implying that while there was one man who was eminent in his wickedness and his wrong-doing, there were many others associated with him, acting under his direction. The word “mischiefs” in the Hebrew means “evils; wickednesses.” It was not a single purpose; the plan embraced many forms of evil - doing him wrong in every way possible.
Continually are they gathered together for war - They are organized for this purpose; they are constantly prepared for it. The word rendered “gathered together” properly means to sojourn, to dwell for a time; and it has been proposed by some to render this, “All the day they dwell with wars;” that is, they are constantly involved in them. But the word may mean also “to gather together,” as in Psalm 56:6.