Having sound doctrine is a repeated theme throughout the New Testament. Paul opposed false teaching almost more than anything else. He wasn’t concerned with having correct theology to win arguments but rather so that we can reach the world. So we can reach our neighbors and show them there’s a better way. They can stop buying the lie that they need to go around God, not to Him for meaning and satisfaction and fulfillment. All of us are called to “contend for the faith that was delivered to the saints once for all” (Jude 3). We contend for the truth because we can only truly understand ourselves once we understand God.