4:3 For thus saith the LORD to the men of Judah and Jerusalem, Break up {c} your fallow ground, and sow not among thorns.
(c) He wills them to pluck up the impiety and wicked affection and worldly respects out of their heart, that the true seed of God's word may be sown in it, Ho 10:12 and this is the true circumcision of the heart, De 10:16, Ro 2:29, Col 2:11.
4:3 For - The Lord turns now his speech from Israel to Judah. Break up - Prepare your hearts by making them soft, tender, and pliable, fit to embrace my word. A metaphor taken from plow - men. Thorns - Rid your hearts and hands of what may hinder you of embracing my word.
4:3,4 An unhumbled heart is like ground untilled. It is ground which may be improved; it is our ground let out to us; but it is fallow; it is over-grown with thorns and weeds, the natural product of the corrupt heart. Let us entreat the Lord to create in us a clean heart, and to renew a right spirit within us; for except a man be born again, he cannot enter into the kingdom of heaven.
