Continuation of the image in Hos 10:11 (Pro 11:18). Act righteously and ye shall reap the reward; a reward not of debt, but of grace.
in mercy - according to the measure of the divine “mercy,” which over and above repays the goodness or “mercy” which we show to our fellow man (Luk 6:38).
break ... fallow ground - Remove your superstitions and vices, and be renewed.
seek ... Lord, fill he come - Though not answered immediately, persevere unceasingly “till He come.”
rain - send down as a copious shower.
righteousness - the reward of righteousness, that is, salvation, temporal and spiritual (1Sa 26:23; compare Joe 2:23 ).