Psalms 78:20 - Exposition

Behold, he smote the rock, that the waters gushed out, and the streams (literally, the torrent courses ) overflowed; can he give bread also? can he provide flesh for his people? These were probably the people's thoughts rather than their words. An "evil heart of unbelief" underlay their clamours and their murmurings. They doubted God's power to relieve their wants, notwithstanding all the proofs that they had had of his omnipotence.