'Thoroughly' in the Bible

Thus saith Jehovah of hosts: They shall thoroughly glean like a vine the remnant of Israel: turn back thy hand, as a grape-gatherer unto the baskets.

But if ye thoroughly amend your ways and your doings, if ye really do justice between a man and his neighbour,

Their Redeemer is strong; Jehovah of hosts is his name: he will thoroughly plead their cause, that he may give rest to the land, and disquiet the inhabitants of Babylon.