The term “doctrine” derives from Latin and is related to the word “doctor,” which means “teacher.” When we think of doctors today, we think of medical practitioners, but in the Roman Empire, doctors were instructors in a specific field. Therefore, “doctrine” means “teaching.” The Greek term is also fitting for this translation. Christian doctrine derives from commandments focused on “love from a pure heart, a good conscience, and from sincere faith” (1 Tim. 1:5). Paul uses “sound doctrine” (1 Tim. 1:10) to describe how the law ought to be used, and it’s connected to one’s behavior. In Titus 2:1, Paul wrote, “But as for you, speak the things which are proper for sound doctrine.” The term “sound” also refers to those who are physically well instead of sick (Luke 5:31; 7:10; 3 John 2). When the prodigal son returned, he was received safe and “sound” (Luke 15:27). All other usages refer to doctrine, not physical health. Still, there’s a lesson herein: those who are physically healthy are sound, or well, so it may reasonably follow that those who are spiritually healthy are sound too.
Many people denounce doctrine as too divisive. It can be, but it ought not to be. Some people exclaim, “I just want Jesus, don’t give me doctrine.” The fault in that statement is that we cannot separate the truths of Jesus from the Person of Jesus, so without sound doctrine, we have no Jesus. John contended with this in his day, “By this you will know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is of God, and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the spirit of the Antichrist, which you have heard was coming, and is now already in the world” (1 John 4:2–3). The way some are today might have said, “Just give me Jesus. I don’t want doctrine,” but for John, it mattered whether or not Jesus appeared in the flesh as a matter of orthodoxy. We tend to dismiss such issues because they seem so minor. There are times when matters are minor, but there are also times when they aren’t. Paul was concerned with sound doctrine, too, and this was what Timothy was to teach and uphold.
Those who lead sinful lives did not order their lives according to “sound doctrine” (1 Tim. 1:8–11; 6:1–5; 2 Tim. 4:3–5; Titus 2:1–10). When one reads all of these passages, we’re struck by how when sound doctrine is mentioned, behavior should follow. We can see here that those behaviors do not accord with sound doctrine, and anyone claiming to represent God is to call things what God calls them and exhort others to order their lives around sound doctrine. Sadly, many fear calling specific actions, lifestyles, or choices sinful, so we dilute orthodoxy to avoid hurting feelings. We can and should be able to call sin what it is and simultaneously be compassionate and loving towards sinners, among whom we are also counted. Sound doctrine, therefore, is spiritual health. When one is healthy, one manifests that in one’s actions. The spiritually healthy person formed by sound doctrine does the things that please God.
How do we get doctrine? Commandments, prohibitions, and examples are a few ways. When God commands something through one of his chosen prophets or mediums, we must do what is commanded. If he prohibits something the same way, we should not do what’s forbidden. If we note patterns of behavior that are commendable, we can mimic the action and know we are not doing wrong. The problem comes when we bind something that God has not bound.
Though Scripture is inspired, interpretation is not. We conclude when we take a topic and study it as a whole. Some conclusions are rather logical and can be taken at face value, but if an interpretation is questioned, there ought to be answers to justify it, or adjustments should be made. For example, “Abstain from every form of evil” (1 Thess. 5:22). In churches of Christ, I have observed some who have employed this passage to prohibit dancing. A reading of 1 Thessalonians would not have that in mind, but there is a way to use it. When Herodias danced before Herod, we might conclude that it was rather provocative (Mark 6:22). After all, he wanted to offer her anything. In this case, dancing can be viewed as sinful. We can’t say that all dancing is terrible. The older son in the parable of the prodigal son came near the house and “heard music and dancing” (Luke 15:25). This story is about rejoicing over a lost son returning to salvation, and they were dancing as a matter of celebration.
No human is the arbiter of determining what is doctrine and shouldn’t be. One interpretation among some in churches of Christ is that the Holy Spirit indwells the believer by proxy–through the Word of God. Since some of us know more Scripture than others, do we have more of the Spirit? When you look at interpretations from the first few centuries, this conclusion hasn’t been reached as far as I have read. It’s hard for me to believe that doctrine because the earliest Christians had a different take. That doesn’t mean they’re always right, but it also doesn’t mean they’re wrong.
I believe it’s best for us to give grace to one another and assume the best. Just because I arrive at a different conclusion than you doesn’t mean I’m malicious. Some Christians read the creation account literally. I happen to take parts of it literally while considering how I understand that an ancient Near Eastern audience would have understood it. Still, I hold no ill will if someone reads it literally. We both love Jesus and want to serve God.