Where is the phrase "ἐγώ εἰμι" anywhere in John 8:40? The balls in your course to say that it is.That would be fallaciously begging the question since "ego eimi" doesn't automatically transfer to one declaring they are God. It's said all over the New Testament, hundreds of times, and you randomly assign deity to Jesus when he said it, but not others? Why would you conclude Jesus is God when he didn't say so in John 8, but instead said he is a man in John 8:40? Ball is back in your court already. You have not provided proof, but rather a semantical argument that isn't consistent in Scripture.
(John 8:40) νῦν δὲ ζητεῖτέ με ἀποκτεῖναι, ἄνθρωπον ὃς τὴν ἀλήθειαν ὑμῖν λελάληκα, ἣν ἤκουσα παρὰ τοῦ Θεοῦ· τοῦτο ᾿Αβραὰμ οὐκ ἐποίησεν.