the Trinity put in the most simple way:
Father: provided/offered/gave the way
Son: Paid the way
Holy Spirit: shows the way
I firmly believe in Trinity, and when the Bible says they're one, it means they work together as one. Not the same person, cause God has always been, Jesus wasn't always around though, God didn't die, Jesus did, God raised Jesus from the dead, Jesus didn't raise Himself, God is the Father, Jesus the Son, you can't be your own father and son. Jesus prayed TO the Father, not to Himself. So many things prove that oneness is wrong. Anyways, peace, and God bless.