You can go a step higher than St. Paul. Deux Factus Sum: ‘I am become Divinity!’ You can’t get any higher than that.
An early declaration, without qualifier or compromise, found in the Bṛhadāraṇyaka Upaniṣad is: Ahaṁ Brahmāsmi: ‘I am Brahman‘. Short, simple, take it or leave it.
In its proper interpretation the opening word Ahaṁ in its breakdown by syllable is not equivalent, not even analogous, to the conventional ‘I’. And Brahman is not identical with ‘Divinity’ as commonly understood.
But for as far back as I recall it has been understood as: ‘I am Divinity’ in a convenient and simplified interpretation. Though unlike elsewhere, nobody got killed for saying it. In fact, quite the opposite. It became a cliched term, a pretense at philosophical depth from the incorrigibly callow.
In today’s India the phrase ‘I am Brahman’ said with enough gravity and vigor will get you a supplicant crowd by lunchtime and by sunset you will be settled in the Guru-Business. And there is no business quite like it.
Ana l-Haqq: ‘I am God Itself!’ [‘I am the Real’, in other translated interpretations].
These famous words deeply entrenched in the psyche of every pious Sufi Muslim, were uttered in Baghdad by Mansur al-Halláj [922 CE] a Persian Mystic who was was arrested and executed forthwith. [Impaled they say, meriting the full wrath of God.]
Al-Halláj himself t pointed to Jesus for his inspiration. One crucified a millennia earlier for saying something very similar:
‘Jesus saith unto him, I am the way, the truth, and the life‘ [John 14:6]
‘No one has ever seen God, but the one and only Son, who is himself God and is in closest relationship with the Father, has made him known‘ [John 1:18].