'Supplication' in the Bible

Thus saith Jehovah, The labor 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 go after thee, in chains they shall come over; and they shall fall down unto thee, they shall make supplication unto thee,'saying , Surely God is in thee; and there is none else, there is no God.