This article is part of the Open Letters series. Dear Evangelical Church, Scripture speaks to us on many issues, but none so important, glorious, and central as our Lord Jesus Christ—and that is an understatement! Given who Jesus is and what he has done, he is the very heart and substance of the gospel, indeed all of Scripture, and thus the most important person in all of human history. Just think about three examples that demonstrate this point. First, it’s almost a truism to say that our triune God is central to everything as the glorious all-sufficient One who alone is Creator and Lord (Rom. 11:33–36). Yet, how we come to know God as triune is largely due to the incarnation of the divine Son and his work. As John reminds us, Jesus is “the Word made flesh” (John 1:14), yet from eternity he was the divine Son who was “with God” and “was God,” thus revealing the triune relation of persons within God (John 1:1). Apart from Christ’s incarnation, we would not know fully how he, as the divine Son, eternally shared the one undivided divine nature with the Father and Holy Spirit in perfect love and communion. And significantly for us, we would not have a Redeemer to save us from our sins (Matt. 1:21).