You led your people like a flock by the hand of Moses and Aaron.
PSALM 77 Whoever was the penman of this psalm, the Holy Spirit seems, by his mouth, to have dictated a common form of prayer for the Church in her afflictions, that even under the most cruel persecutions the faithful might not fail to address their prayers to heaven.
Commenting on Psalm 77:1-20
Thou leddest thy people like a flock by the hand of Moses and Aaron. What a transition from tempest to peace, from wrath to love. Quietly as a flock Israel was guided on, by human agency which veiled the excessive glory of the divine presence. The smiter of Egypt was the shepherd of Israel. He drove his foes before him, but went before his people.
The psalmist here recovers himself out of the great distress and plague he was in, and silences his own fears of God's casting off his people by the remembrance of the great things he had done for them formerly, which though he had in vain tried to quiet himself with (Psa 77:5, Psa 77:6) yet he tried again, and, upon this second trial, found it not in vain.
Commenting on Psalm 77:11-20