Empty, i.e. without a present; which they judged necessary, from the common opinion and practice both of Jews and Gentiles.
Return him a trespass-offering; thereby to acknowledge our offence, and obtain his pardon.
It shall be known to you; you shall understand what is hitherto doubtful, whether he was the author of these calamities, and why they continued so long upon you. Compare 1Sa_6:7-9.