The Name Yahweh: Ehyeh and Yahweh in One Sentence

This is the detail that settles most of the argument, and it is very easy to read straight past.
Verse 14 ends with God saying: tell the Israelites, "I am has sent me to you." Ehyeh has sent me. Then verse 15 opens with God saying it again, same formula, same construction: tell the Israelites, "Yahweh, the God of your fathers... has sent me to you."
Two verses, back to back, identical sentence, one word swapped. "Ehyeh has sent me" is the precise equivalent of "Yahweh has sent me" in the following verse. The text is showing you that these are the same name in two different persons - first person in God's own mouth, third person for everyone else.
You do not need Hebrew to see it. You need only to read verse 15 immediately after verse 14 and notice that God has just repeated himself.
Scripture links:
- Exodus 3:14 - "So you must say to the Israelites, 'I am sent me to you.'" (LEB)
- Exodus 3:15 - "So you must say to the Israelites, 'Yahweh, the God of your ancestors, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you. This is my name forever.'" (LEB)
- Isaiah 42:8 - "I am the LORD; that is my name."
One sentence, said twice, with the name in two persons.