Spirit of Truth
רוּחַ הָאֱמֶת
The Spirit of Truth who guides into all truth.
Emet — truth — is spelled alef, mem, tav: the first, middle, and last letters of the alphabet, and Jewish tradition calls it the seal of God. The Spirit of Truth carries that seal; both traditions test every other spirit against it.
First occurrence
John 14:17 — 'Whom the world cannot receive'
Key passages
John 16:13 — 'He will guide you into all truth'
1John 4:6 — 'By this we know the Spirit of truth and the spirit of error'
Ps 31:5 — 'You have redeemed me, YHVH, El Emet — God of truth'
In the Greek Scriptures
τὸ Πνεῦμα τῆς ἀληθείας