Not only the adoration of images is idolatry, but also trust in one's own righteousness, works and merits, and putting confidence in riches and power. As the latter is the commonest, so it also is the most noxious.
Martin LutherThe spiritual rest, which God particularly intends in this Commandment, is this: that we not only cease from our labor and trade, but much more, that we let God alone work in us and that we do nothing of our own with all our powers.
Martin Luther