'Pledge' in the Bible

“Give me a pledge (guarantee, promise) with Yourself [acknowledge my innocence before my death];Who is there that will be my guarantor and give security for me?

“They drive away the donkeys of the orphans;They take the widow’s ox for a pledge.

“Others snatch the fatherless [infants] from the breast [to sell or make them slaves],And against the poor they take a pledge [of clothing].