'Pledge' in the Bible

and he saith, 'I -- I send a kid of the goats from the flock.' And she saith, 'Dost thou give a pledge till thou send it?'

and he saith, 'What is the pledge that I give to thee?' and she saith, 'Thy seal, and thy ribbon, and thy staff which is in thy hand;' and he giveth to her, and goeth in unto her, and she conceiveth to him;

And Judah sendeth the kid of the goats by the hand of his friend the Adullamite, to receive the pledge from the hand of the woman, and he hath not found her.