Sow to yourselves in righteousness, reap in mercy; break up your fallow ground: for it is time to seek the LORD, till he come and rain righteousness on you. (Hosea 10:12)
It is time to seek the Lord; it is full time, if you consider it aright; or, it is yet time, you may seek and find he is not quite gone, still he calls you, therefore hearken, and follow seasonable advice, seek ye the Lord whilst he may be found.
Till he come; seek with patience and faith until he doth, as certainly he will, come; for this passage is a virtual or implicit promise that God will come to them if they seek him, i.e. he will bless, favour, and love them; in these he will appear to them, which is his coming to them.
Rain righteousness; plentifully pour out the fruits of his own goodness and mercy which he hath promised, and, having promised, it is a righteous thing they should be given according to promise; thus the mercies of God to us are his righteousness to us.
Upon you, who repent and obey his counsel by his prophets.
Source: Matthew Poole's Commentary