S Wilfrid: "for freedom Christ set us free"

so stand firm and do not submit again to the yoke of slavery

-- Gal 5:1-6

1221 But above all, the crossing of the Red Sea, literally the liberation of Israel from the slavery of Egypt, announces the liberation wrought by Baptism:

You freed the children of Abraham from the slavery of Pharaoh,
bringing them dry-shod through the waters of the Red Sea,
to be an image of the people set free in Baptism.

-- CCC 1221