God calls to Moses from the burning bush to take off his shoes, for he is on holy ground. Today is the first Sunday in Lent, an outward season. God calls for an outward act on Moses’ part here, to show his reverence. We must avoid putting on a show for others or for ourselves when we do works of piety, Jesus says in the sermon on the mount. But Jesus does not mean to forbid all outward acts of piety, whether charity for others, fasting for ourselves, or worship toward God. How do you remind yourself from day to day that God is holy and you are not? How do you remind yourself of Christ’s call to deny yourself, take up your cross daily and follow Jesus? Let our actions flow from a heart of reverence and confession for our sins.