And Joshua the son of Nun called the priests
 Not the Levites and Kohathites, whose business it was in common to bear the ark, but upon this occasion the priests; not all of them, but as many as were sufficient for the purpose: 
 and said unto them, take up the ark of the covenant;
 by putting the staves into the rings of it, and so carry it, ( Exodus 25:14 ) ; see ( Numbers 7:9 ) ; 
 and let seven priests bear seven trumpets of rams' horns before the ark
 of the Lord: (See Gill on Joshua 6:4). 
The Brenton translation of the Septuagint is in the public domain.