And every firstborn of a donkey you shall redeem with a lamb; and if you will not redeem it, then you shall break its neck; and all the firstborn of man among your sons you shall redeem. Exo 13:13
The primitive root
Strong’s H6299 פדה padah, a primitive root meaning, “to redeem.” The ancient pictographs are pey + dalet + hey.
pey פ, ף = the mouth, thus open, blow, scatter, edge
dalet ד = the door, thus enter, move, hang
hey ה = man with upraised arms, thus look, reveal, wonder, worship, breath
The story being told is that the opening (pey) of the door (dalet) of the house of bondage elicits thanksgiving and worship (hey) from the redeemed.