4872. And she said, If thou wilt give a pledge till thou send it? That this signifies the reciprocal if there is certainty, is evident from what was said above by Tamar, "What wilt thou give me, that thou mayest come to me?" as signifying the reciprocal of conjunction with a condition (n. 4870), here the reciprocal in case of certainty, because the pledge was for certainty that the thing promised would be given.