You said "If people believe in God, but not the Trinity, then it’s a different definition from the God of Abraham, Isaac, and Jacob.
So yes you in fact are saying the God of Abraham, Isaac, and Jacob was the Trinity, so Abraham worshipped the Trinity. You then claim it just wasn't revealed to Abraham, but he was in fact worshipping the same God, even if it didn't believe or understand the Trinity. Yet any Jew or Muslim (or even Christian) who worships the God of Abraham today, but not the Trinity, because the Trinity hasn't been revealed to them, is worshippijng a different God than the God of Abraham, Isaac and Jacob? I fail to see the logical consisitency in that contention.
I didn’t clarify that it was specifically coming from a Christian perspective, and you’re right, I should’ve bc otherwise it’s confusing. Jews and Muslims reject the Trinity bc they don’t recognize Jesus as God in the flesh, or accept the gospel. If you reject Christ, you’re rejecting God as He says He is: the Trinity. It’s basically saying ‘that’s our God...BUT, He says Jesus and the Holy Ghost are one with Him, but that’s not true’. You’re then defining God on your own terms, making God into what fits what you want. That’s ballsy, especially when Jesus’ life and everything about it was extensively documented. Even with all those historical records of Jesus confirming He’s God, and his perfect life, miracles, and resurrection and ascending to Heaven in front of hundreds of people.
It’s no longer the case where God hadn’t revealed His plan for redemption because He already sent Jesus, then sent the Holy Spirit when Jesus returned to God’s right hand.
Jesus and the Holy Spirit are a part of God, but he hadn’t revealed those facets yet. But yes, even though Abraham was far before Jesus’ time, bc Jesus is God, just His spirit in flesh, He was dwelling with God from the beginning, the Jews just didn’t know yet, and God didn’t send Jesus until it was His divine time to go.
Jesus ‘tore the veil’ ... by paying for our sins, He opened the door to experience His spirit for believers bc we’re no longer ‘unclean’. I reference ‘tore the veil’, bc that’s important and rarely mentioned. Here’s an explanation:
https://www.gotquestions.org/temple-veil-torn.html
John 1:1&2
In the beginning was the Word, and the Word was with God, and the Word was God. He was with God in the beginning.
(skipping ahead to the verse regarding the Word being Christ)
14: The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth.
Jesus also says later in John “Most assuredly I say to you, I AM”.... which is how God referred to Himself in the Old Testament.
Jesus is God, but there is an order (‘Jesus sits on the right hand of the Father’...there’s a Father/Son) which is why I say ‘God’ when I refer to mostly anything in the Old Testament. Not bc the Trinity didnt already exist, but bc God is the covering. I use Jesus when I refer to almost everything else so there isn’t any question about my belief in the Trinity, and that belief is what makes a distinction. Abraham wasn’t aware of the Trinity bc it wasn’t revealed yet, and therefore, couldn’t possibly deny it. However, he trusted God wholeheartedly, to the point of obeying when God tested him with Isaac. He had deep reverence for God, and God would speak to him directly. I can’t fathom that had he been on earth, he wouldn’t have recognized the glory of God in the flesh- aka, Jesus.