How was Peter armed while on the water?

St. Cyril of Jerusalem says, “For so great is the strength of faith, as even to buoy men up in walking on the sea. Peter was a man like ourselves, made up of flesh and blood, and living on the same food. But when Jesus said, Come (Matt. 14:29), he believed, and walked upon the waters, and found his faith safer upon the waters than any ground; and his heavy body was upheld by the buoyancy of his faith. But though he had safe footing over the water as long as he believed, yet when he doubted, at once he began to sink: for as his faith gradually relaxed, his body also was drawn down with it. And when He saw his distress, Jesus who remedies the distresses of our souls, said, O you of little faith, why did you doubt? (Matt. 14:31). And being nerved again by Him who grasped his right hand, he had no sooner recovered his faith, than, led by the hand of the Master, he resumed walking upon the waters.”³⁶