'Supplication' in the Bible

Thus saith Jehovah: The wealth of Egypt, and the merchandise of Ethiopia and the Sabeans, men of stature, shall come over unto thee, and they shall be thine: they shall walk after thee; in chains they shall come over, and they shall bow down unto thee, they shall make supplication unto thee, saying, Surely God is in thee; and there is none else, no other God. ...