'Pledge' in the Bible

Lay down now a pledge, be thou surety for me with thyself: who is he that striketh hands with me?

For thou hast taken a pledge of thy brother for nought, and stripped off the clothing of the naked.

They drive away the ass of the fatherless, they take the widow's ox for a pledge;

They pluck the fatherless from the breast, and take a pledge of the poor: