The stakes in the current conflict over sex are more critical, more central, and more essential than in any controversy the church has ever known. This is a momentous statement, but I make it soberly, without exaggeration. Conflict over sex these days is not just challenging tradition, orthodoxy, and respect for authority in areas such as ordination, marriage, and gender roles. And it does not just affect critically important decisions like the sanctity of human life, the authority and trustworthiness of Scripture, the Trinity and the incarnation of Christ. Rather, war over sex among Christians is now raging over absolutely essential matters of faith without which no one can be a Christian in the first place – matters such as sin, salvation, the gospel and the identity of God Himself (Daniel Heimbach).