'Loose' in the Bible

He made answer and said, Look! I see four men loose, walking in the middle of the fire, and they are not damaged; and the form of the fourth is like a son of the gods.

And all Israel have been sinners against your law, turning away so as not to give ear to your voice: and the curse has been let loose on us, and the oath recorded in the law of Moses, the servant of God, for we have done evil against him.

And a strong order will be sent out against the great number for one week; and so for half of the week the offering and the meal offering will come to an end; and in its place will be an unclean thing causing fear; till the destruction which has been fixed is let loose on him who has made waste.