"Open wide your mouth and I will fill it." (Psalm 81:10)
Psalm 81 is a liturgical psalm for one of Israel's great feasts, possibly Tabernacles. It opens with a call to joyful worship: sing for joy to God our strength, shout aloud to the God of Jacob, bring the tambourine, the harp, the lyre. The whole body enters worship. Then the voice shifts and God himself speaks through the psalm, recalling the Exodus: I am the LORD your God who brought you up out of Egypt. And he makes an extraordinary promise: Open wide your mouth and I will fill it.
But the psalm turns on a grief: the people would not listen. God gave them over to their stubborn hearts. If only they would listen and walk in his ways, he would quickly subdue their enemies and feed them with the finest wheat and honey from the rock. The tragedy of the psalm is the gap between what God offers and what the people choose. The Catechism reflects on this divine restraint: God does not force the human will; he invites, he waits, he grieves the refusal, and he continues to offer (CCC 1730). The mouth opened wide in worship is the posture that receives everything. The closed mouth receives nothing.
Brothers and sisters, the promise of Psalm 81 is one of the most beautiful in the Psalter: open your mouth wide and I will fill it. What does it mean to open wide? It means coming to God without an agenda of your own, without a predetermined answer you want him to confirm. Just open. Ask to be filled with whatever he chooses to give. That is the prayer he promises to answer fully.
Lord God, we open our mouths wide before you. Fill us with whatever you choose: with your word, your Spirit, your grace, your correction. We will not tell you what to put in. We come hungry, and you are the bread. Through Christ our Lord. Amen.