Is God a trinity?

The claim: that God is three persons in one essence — Father, Son, and Holy Spirit. Because the doctrine claims the Bible, it is assessed from the Bible. The word 'trinity' appears nowhere in the Hebrew Bible or the New Testament. The creed the texts do state is singular: 'Hear, O Israel: the LORD our God, the LORD is one' (Deuteronomy 6:4) — recited by Jesus himself as the first of all commandments (Mark 12:29). Jesus prays to 'the only true God' as to another (John 17:3), does not know the hour the Father knows (Mark 13:32), and calls the Father 'greater than I' (John 14:28); Paul writes of 'one God, and one mediator between God and men, the man Christ Jesus' (1 Timothy 2:5). The one verse that states the doctrine outright — 'the Father, the Word, and the Holy Ghost: and these three are one' (1 John 5:7) — is a documented scribal insertion, absent from the early Greek manuscripts and removed from modern critical editions. The term trinitas is coined by Tertullian around 200 CE, and the doctrine takes its formal shape by council vote at Nicaea (325) and Constantinople (381), centuries after the texts closed. Assessed on its own scripture, the claim fails. That the Qur'an says the same (4:171; 112:1) is noted on file — the verdict did not need it. REFUTED.