'Subtilly' in the Bible

Go, I pray you, prepare yet, and know and see his place where his haunt is, and who hath seen him there: for it is told me that he dealeth very subtilly.

He turned their heart to hate his people, to deal subtilly with his servants.

The same dealt subtilly with our kindred, and evil entreated our fathers, so that they cast out their young children, to the end they might not live.