Triune God
Don Carson points to the “implicit Trinitarian reference” in 1 Corinthians 12. There’s more good stuff in his commentary, too.
Unified Truth
There’s one more post in Kim Shay’s excellent series on studying the Bible:
The Bible is a unified whole. It is not a collection of articles like a Newsweek magazine. The Bible has 66 different books with 66 different purposes, but they all come together to present one, unified truth.
Read all of Training in Righteousness - 5.