"Because you did not trust in me enough to honour me as holy in the sight of the Israelites, you will not bring this community into the land I give them." (Numbers 20:12)
Miriam dies and is buried. The people quarrel with Moses again: there is no water. God tells Moses to take the staff and gather the assembly and speak to the rock before their eyes; it will pour out its water. Moses gathers the people and says: listen, you rebels, must we bring you water out of this rock? Then he strikes the rock twice with his staff. Water gushes out. But God says to Moses and Aaron: Because you did not trust in me enough to honour me as holy in the sight of the Israelites, you will not bring this community into the land I give them. The precise sin is debated: speaking in anger (must we bring you water?), striking the rock instead of speaking to it, striking it twice, or some combination. Whatever the exact failure, Moses has somehow not honoured God as holy before the people at the very moment he was sent to do exactly that.
The severity of the consequence, that Moses and Aaron will not enter the land, is the measure of the weight of leadership: those who speak for God in the sight of the people bear a proportionately greater responsibility for the quality of their witness. The Catechism notes that this judgment is not vindictive but reveals the seriousness of the mediatorial role (CCC 2584). Aaron dies on Mount Hor. Moses removes his garments and puts them on Aaron's son Eleazar. All the Israelites mourn Aaron thirty days.
Brothers and sisters, Moses struck the rock in frustration and anger when God told him to speak to it. Leadership carried too long without renewal can produce this: the exhausted action that substitutes force for faith. Do not try to produce by striking what God has promised to provide by speaking. Speak the word. Trust the rock to give water at the word.
Lord God, forgive us when we strike what you told us to speak to, when we act in frustration rather than faith. Honour your holy name through us even when the people are quarrelling and the way is long. Through Christ our Lord. Amen.