'Trespass offering' in the Bible

They said, "If you send away the ark of the God of Israel, do not send it empty; but by all means return him a trespass offering: then you shall be healed, and it shall be known to you why his hand is not removed from you."

Then they said, "What shall be the trespass offering which we shall return to him?" They said, "Five golden tumors, and five golden mice, for the number of the lords of the Philistines; for one plague was on you all, and on your lords.

and take the ark of the LORD, and lay it on the cart; and put the jewels of gold, which you return him for a trespass offering, in a coffer by its side; and send it away, that it may go.

These are the golden tumors which the Philistines returned for a trespass offering to the LORD: for Ashdod one, for Gaza one, for Ashkelon one, for Gath one, for Ekron one;