Al-Hallaj they say, pointed to a Rabbi for his inspiration. One crucified a milennia earlier for saying something very similar [Crucifiction; a regional, not a Roman punishment]:
‘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].
Deux Factus Sum: ‘I am become Divinity!’ This is the limit of St. John’s: ‘Spiritual Union between Soul and God’ [See: ‘Brought to Nothing‘].
The top of the mountain. You can’t get any higher than this.
The full King James Version:
‘Thomas saith unto him, Lord, we know not whither thou goest; and how can we know the way? Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him.
Philip saith unto him, Lord, shew us the Father, and it sufficeth us. Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father? Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works. Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake. Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father. And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son. If ye shall ask any thing in my name, I will do it.’