Psalms 78:20-24

²⁰Yes, he can strike a rock so that water gushes out like flowing rivers, but can he give us bread? Can he supply his people with meat?”

²¹When he heard this, the Lord became very angry, burning like fire against the descendants of Jacob, furious with the people of Israel,

²²for they didn't believe in God and didn't trust him to take care of them.

²³Even so he commanded the skies above and the doors of heaven to open,

²⁴and he made manna rain down on them to eat, giving them bread from heaven.