Psalm 79:12

And render unto our neighbours sevenfold into their bosom their reproach, wherewith they have reproached thee, O Lord.

And render unto our neighbours seven fold into their bosom, ec. Not seven fold for one, as the Targum paraphrases it, or a seven fold punishment for one sin; but that he would recompense their sins, or punish for them, and take vengeance on them, largely, abundantly, though not beyond measure, or exceeding the rules of justice; see Genesis 4:15,

the reproach with which they have reproached thee, O Lord; by denying his being, or calling in question his perfections of power, truth, and goodness, to help his people; speaking ill of his providence, despising his word and ordinances, and even reproaching his people in reproaching him, Psalms 89:50, and this is what a righteous recompence is desired for; see Lamentations 3:64.