A Verb That Becomes a Name
The same word God uses to describe himself is handed to Moses as a title to report to others — and no language handles that easily.
אֶהְיֶה is a first-person form of the Hebrew verb 'to be' — something like 'I am' or 'I will be.' It appears three times in this single verse. The first two occurrences form the doubled formula God speaks about himself. The third is different: God tells Moses to carry it to the Israelites as the name of the one who sent him. At that moment, the word stops functioning as a verb and starts functioning as a title.
The grammatical tension is real and unresolvable by translation. A first-person verb can only be spoken by the one it describes. The moment Moses says "I AM has sent me," he is quoting a self-designation — repeating in third-person reference a word that is structurally locked to first-person speech. Every translation must either flatten it into an abstract noun ('the Eternal,' 'the Self-Existent') or leave the first-person form standing and let the strangeness show.
This third אֶהְיֶה is therefore not simply a repetition of the earlier two. It is the same form crossing from self-declaration into proper name, from what God says about himself into what Israel will say about God. That crossing is precisely what the verse is narrating — and the word itself enacts it.