I dunno. I fell under the sway of some anti-trinitarian teachings in my late twenties, but God still heard my prayers (and ultimately revealed the truth). I have a hard time understanding that myself.
I agree. I came to Jesus beginning with a private(just me and Him) agnostic prayer, "Jesus, if you're real, if you're there, if you have the authority that you claim you have in the Bible, then please help me." Up until that time, I considered Jesus to be an ordinary man like myself who had attained to a supreme state of higher consciousness. This was a humbling of myself towards Him, based on what true Christians had told me, yet at that time I did not understand from them that He was the infinite Creator GOD, come in the flesh. My wife did not know what I had done, but in a day or so, she asked me to read ICo 1-2.
1Co 2:14 But a natural man does not accept the things of the Spirit of God, for they are foolishness to him; and he cannot understand them, because they are spiritually appraised.
These and the related verses caused me to consider that my pantheistic worldview might be upsidedown. That Sunday I was motivated to go to a local church, where a guest missionary preacher exegeted ICo 1-2. Jesus had my attention. I received Him as my Lord and Savior and His peace flooded my being.
As I studied the scriptures over time, it suddenly dawned on me that Jesus is GOD in the flesh. I believe that if one has an open mind and humble spirit, then the Holy Spirit will lead one to that conclusion.
The conclusion that Jesus is Deity will lead to a full trinitarian understanding. I don't believe that one must have that understanding to be saved, however if one desires to be consistent with the scriptures and grow in the knowledge of the mystery of GOD, then he will arrive at that conclusion.
From GOD walking and talking with Adam in the garden, the Angel of YHVH appearing and speaking to Abram/Abraham, Hagar, Moses, Joshua, King David, Isaiah, etc. and the incarnation of the WORD , it's hard to deny that GOD has chosen to reveal Himself to man in the form of man. That is unless one just doesn't want to know and from having itching ears has gathered teachers to themselves. The LORD will have to judge all of this and sort it out in the end, but I must fellowship with those who hold to sound orthodoxy.