'Tail' in the Bible

'And Jehovah hath given thee for head, and not for tail; and thou hast been only above, and art not beneath, for thou dost hearken unto the commands of Jehovah thy God, which I am commanding thee to-day, to keep and to do,

he doth lend to thee, and thou dost not lend to him; he is for head, and thou art for tail.