'Guilt offering' in the Bible

And they say, 'If ye are sending away the ark of the God of Israel, ye do not send it away empty; for ye do certainly send back to Him a guilt-offering; then ye are healed, and it hath been known to you why His hand doth not turn aside from you.'

And they say, 'What is the guilt-offering which we send back to Him?' and they say, 'The number of the princes of the Philistines -- five golden emerods, and five golden mice -- for one plague is to you all, and to your princes,

and ye have taken the ark of Jehovah, and put it on the cart, and the vessels of gold which ye have returned to Him -- a guilt-offering -- ye put in a coffer on its side, and have sent it away, and it hath gone;

And these are the golden emerods which the Philistines have sent back -- a guilt-offering to Jehovah: for Ashdod one, for Gaza one, for Ashkelon one, for Gath one, for Ekron one;