'Add' in the Bible

And now whereas my father did lade you with a heavy yoke, I will add to your yoke: my father chastised you with whips, but I will chastise you with scorpions.

and spake to them after the counsel of the young men, saying, My father made your yoke heavy, but I will add to your yoke: my father chastised you with whips, but I will chastise you with scorpions.