Say to them that are of a fearful heart, Be strong, fear not: behold, your God will come with vengeance, even God with a recompence; he will come and save you.
A fearful heart - margin, hasty; i:e., with a heart fluttered with agitation.
(With) vengeance. The Hebrew is more forcible than the English version.
God will come ... vengeance, (even) God ... a recompence. The sense is the same.