
Aaron Erhardt
minister & author

Aaron Erhardt
Mar 31, 2026
It is important that we know “what” we believe and “why” we believe it. Yet sadly, many Christians could not give a detailed explanation from scripture about their beliefs.
After hearing his dad preach on “justification,” “sanctification,” and all the other “ations,” a minister’s son was asked if he knew what “procrastination” meant. He replied, “I don’t know what it means, but I know our church believes in it.”
It is important that we know “what” we believe and “why” we believe it. Yet sadly, many Christians could not give a detailed explanation from scripture about their beliefs. They could not tell you why they have such convictions. It reminds me of the Christian who was asked by a coworker what he believed about God. He answered, “I believe what my church believes.” The coworker said, “What does your church believe?” He said, “My church believes what I believe.” The coworker replied, “Ok, what do you and your church believe?” The Christian said, “We both believe the same thing.”
What we believe matters. We must “believe the truth” (2 Thess. 2:12). That is why Paul emphasized the need for “soundness” so much: “Whatever else is contrary to sound doctrine” (1 Tim. 1:10). “If anyone teaches a different doctrine and does not agree with the sound words” (1 Tim. 6:3). “Follow the pattern of the sound words” (2 Tim. 1:13). “For the time is coming when people will not endure sound teaching” (2 Tim. 4:3). “So that he may be able to give instruction in sound doctrine” (Tit. 1:9). “Rebuke them sharply, that they may be sound in the faith” (Tit. 1:13). “But as for you, teach what accords with sound doctrine” (Tit. 2:1). “Older men are to be sober-minded, dignified, self-controlled, sound in faith” (Tit. 2:2).
The Greek word for “sound” is hygiainō, from which we get our English word “hygiene.” It means to be of good health; to be uncorrupted or wholesome. It is used by Paul in reference to that which is correct or true. This implies that there are “unhealthy” doctrines as well. So, obviously, what we believe matters.
If you are truly interested in being “sound” doctrinally, you may want to check out a new channel on YouTube called “Church of Christ ANSWERS.” It is a great tool for learning the truth and refuting religious errors. It is filled with valuable information that will equip the child of God to “make a defense to anyone who asks” (1 Pet. 3:15)!