Psalms 77:19 - Joseph Benson’s Commentary on the Old and New Testaments

Thy way is in the sea, &c. Or rather, was, at that time; thou didst walk and lead thy people in untrodden paths; and thy footsteps Or, though thy footsteps were not seen God walked before his people through the sea, though he left no footsteps of himself behind him. Thus “the dispensations and ways of God, like the passage through the Red sea, are all full of mercy to his people; but they are also, like that, often unusual, marvellous, inscrutable; and we can no more trace his footsteps than we could have done those of Israel, after the waters had returned to their place again. Let us resolve, therefore, to trust in him at all times; and let us think that we hear Moses saying to us, as he did to the Israelites, when seemingly reduced to the last extremity, Fear ye not, stand still, and see the salvation of Jehovah.” Horne.