break up your fallow ground; that is, of their hearts; which were like ground unopened, unbroken, not filled and manured, nor sown with seed, but overrun with weeds and thistles; and so were they, hard and impenitent, destitute of grace, and full of sin and wickedness, and stood in need of being renewed in the spirit of their minds; which this exhortation is designed to convince them of, and to stir them up to make use of proper methods of obtaining it, through the efficacious grace of God; see Jer 4:5;for [it is] time to seek the Lord: for his grace; as the husbandman seeks, prays, and waits for rain, when he has tilled his ground, and sowed his seed, to water it, and make it fruitful, that he may have a good reaping time, a plentiful harvest; and as there is a time to seek for the one, so for the other:till he come and rain righteousness upon you; that is, Christ, whose coming is as the rain, Ho 6:3; and who, when he should come, whether personally by his incarnation, or spiritually by his gracious presence, would rain a plentiful rain of the doctrines of grace, and the blessings of it, such as peace pardon, righteousness, and eternal life by him; particularly the justifying righteousness wrought out by him, which is fully manifested in the Gospel, the ministration of that righteousness, and is applied unto, and put upon, all them that believe: or "till he come and teach you righteousness" ; as Christ did when come; he taught the word of righteousness in general, and the righteousness of God in particular, and directed men to seek it; declared he came to fulfil all righteousness, and taught men to believe in him for it, and that he is their righteousness, and the end of the law for it; as well as he taught them to live righteously and godly; see Joe 2:23.
The Targum is,"O house of Israel, do for yourselves good works; walk in the way of truth; establish for yourselves the doctrine of the law; behold, at all times the prophets say to you, return to the fear of the Lord; now shall he be revealed, and bring righteousness to you.'
'But these exhortations were vain and fruitless, as appears by what follows: hqdul "ad justitiam", Pagninus, Montanus, Munster, Calvin, Junius & Tremellius, Drusius, Tarnovius, Cocceius. dox ypl "ad os miserecordiae", Montanus; "secundum misericordiam", Pagninus; "secundum pietatem", Cocceius, Schmidt.