His: 1350 ga’al gaw-al’ a primitive root, to redeem (according to the Oriental law of kinship), i.e. to be the next of kin (and as such to buy back a relative’s property, marry his widow, etc.):–X in any wise, X at all, avenger, deliver[-er], (do, perform the part of near, next) kinsfolk(-man), purchase, ransom, redeem(-er), revenger.
YHWH: “Modern scholars generally agree that YHWH is derived from the Hebrew triconsonantal root היה (h-y-h), “to be, become, come to pass”, an archaic form of which is הוה (h-w-h), with a third person masculine y- prefix, equivalent to English “he”. They connect it to [eg.] Exodus 3:14 – [ETC..] where the divinity [‘Elohiym of Israel, YHWH] who spoke with Moses responds to a question about his name by declaring: אֶהְיֶה אֲשֶׁר אֶהְיֶה (Ehyeh asher ehyeh),“I am that I am” or “I will be what I will be”(in Biblical Hebrew the form of the verb here is not associated with any particular English tense).“
THE NAME THAT EXPRESSES (IS) THE WORD AND WORKS OF ISRAEL’S ‘ELOHIYM: