Jeremiah 22:4

If ye do this thing indeed; if ye will not pretendedly, but really, give to every one their due, and look that inferior magistrates acting under you do so. Then, he doth not say, you shall be saved: the promise is only of a secular, temporal nature, of all prosperity, and continuance of the family of David, with great honour and splendour, expressed by those phrases of riding in chariots and on horses. Though the performance of moral acts of justice and mercy, which men may perform without any special grace of God, be not enough to entitle them to the hopes of spiritual and eternal good things; yet they may entitle them to the hopes of outward prosperity and happiness in this life, Daniel 4:27; which is sufficient to demonstrate that men's outward infelicities and sufferings under the grievous judgments of God upon themselves is from their selves; they might in a great measure avoid them, by doing such acts as are in their power to do.