1. Was there a doctrine of the Trinity in the time of Jesus and His disciples?
The simplest outline of the doctrine was formulated in the 4th century, largely in terms of rejection of what was considered not to be consonant with general Christian belief. Further elaboration continued in the succeeding centuries.
Scripture contains neither the word Trinity, nor an expressly formulated doctrine of the Trinity. Rather, according to the Christian theology, it "bears witness to" the activity of a God who can only be understood in Trinitarian terms. The doctrine did not take its definitive shape until late in the fourth century. During the intervening period, various tentative solutions, some more and some less satisfactory, were proposed.
10. "Trinity, doctrine of" in The Oxford Dictionary of the Christian Church (Oxford University Press 2005 ISBN 978-0-19-280290-3)
11. Matt Slick, "The word Trinity is not found in the Bible"
12. McGrath Alister E. Christian Theology: An Introduction Blackwell, Oxford (2001) p.321
13. McGrath, Alister E. Christian Theology: An Introduction Blackwell, Oxford (2001) p.324
The above info answers saying there was NO OFFICIAL Trinity doctrine in the time of Jesus and His disciples, because as we have clearly read. The Trinity doctrine did not take its definitive shape until 300 years later in the 4th century.
Question for Trinitarians?
As there was NO TRINITY doctrine for over 300 years after Christ, and the Disciples and millions of Christians did not have the TRINITY doctrine as their MAIN faith, but instead believed GOD was ONE GOD AND ONE PERSON ALONE and that Jesus was the SON of GOD.
Would this mean the Disciples and millions of Christians, including Jesus who only ever taught His Father was ONE PERSON in Mark 12:29, and that He was GODS SON John 10:36, are they all going to HELL?
WHY DO MOST OF CHRISTIANITY BELIEVE IN WHAT WAS NEVER TAUGHT IN THE TIME OF JESUS AND HIS DISCIPLES?
No one needs to be a scientist to read the history of the TRINITY, and see how the TRINITY became a NEW RELIGION in the fourth century.