St. Jerome sees Virgin Mary in these verses a cloud, as a prefiguration of Christ and His mother.
“In the daytime also He led them with the cloud,Psalms 78:14
And all the night with a light of fire.”
” An oracle concerning Egypt.Isaiah 19:1
Behold, the Lord is riding on a swift cloud and comes to Egypt;
and the idols of Egypt will tremble at his presence,
and the heart of the Egyptians will melt within them.”
Gambero, L., 1999. Mary and the Fathers of the Church 1st ed. Translated by Buffer, T., San Francisco: Ignatius Press.