How do we know if doctrine is true?

Determining the truth of doctrine depends on its adherence to the teachings of Jesus Christ and the whole counsel of God found in Scripture. Paul advises Timothy in 1 Timothy 6:3-5 that any teaching contrary to sound words is a clear indication of falsehood. A doctrine that is true will lead to a life of godliness, reflecting genuine faith and a humble heart towards God. Furthermore, the Bible teaches that all Scripture is God-breathed and useful for teaching, implying that true doctrine must be rooted in the entire Word of God, revealing the character and nature of Christ.