How do we know if a doctrine is true?

Determining the truth of a doctrine requires discerning its scriptural foundation and the outcomes it produces in the lives of believers. Romans 16:17-18 admonishes the church to mark those who cause divisions contrary to sound doctrine and to avoid them. True doctrine promotes godliness and builds up the body of Christ in unity and love, while false teachings result in strife and division. Thus, examining the fruits of doctrine—how it aligns with Scripture and its effects on the church community—is essential for recognizing truth.