It was with good reason that God commanded through Moses that the vineyard and harvest were not to be gleaned to the last grape or grain; but something to be left for the poor. For covetousness is never to be satisfied; the more it has, the more it wants. Such insatiable ones injure themselves, and transform God's blessings into evil.
Martin LutherWe ought first to know that there are no good works except those which God has commanded, even as there is no sin except that which God has forbidden.
Martin LutherSin cannot tear you away from him [Christ] even though you commit adultery a hundred times a day and commit as many murders.
Martin LutherIn ourselves, we are sinners, and yet through faith we are righteous by the imputation of God. For we trust him who promises to deliver us, and in the meantime struggle so that sin may not overwhelm us, but that we may stand up to it until he finally take it away from us.
Martin Luther