It is better to do good, than to argue over what is good. Arguing over matters of Scriptural interpretation has no practical use in the Kingdom of God. The gospel message suffers much at the hands of disputers. After all arguments are given, neither person is any wiser, or more in love with God. Ephesians 4:15 tells us we should speak the truth in love. But, I have seen many times where both parties in an argument were angry. This is not wise or fruitful.
Scripture is silent on some questions. On other questions men have different interpretations or perspectives on the mysteries which belong to God alone. There are prophecies of doubtful interpretation that are foolish to argue about, as well as pointless, because it doesn't really matter if Jesus returns before, during, or after the trib. What matters is if we are under the blood. Arguing over modes of observing human ceremonies is foolish, because they serve men, not God who has done all for our salvation. Our business is not to ask foolish questions, but to avoid them altogether. If we observe the apostle's instructions here in Titus 3:8 to to be careful to maintain good works, we will find ourselves far too much occupied with profitable business to take much interest in unworthy, contentious, and needless arguments about the law.
The important questions are really along the lines:
Do I believe in the Lord Jesus Christ?
Am I renewed in the spirit of my mind?
Am I walking not after the flesh, but after the Spirit?
Am I growing in grace?
Does my conversation adorn the doctrine of God my Saviour?
Am I looking for the coming of the Lord, and watching as a servant should do who expects his master?
What more can I do for Jesus?
-Taken from Charles Spurgeon (British Preacher from the 1800's)
If we have critical discernment, and knowledge and wisdom in matters of Scripture, let us argue with ourselves on these questions, and not with our brother. Our goal is to be peacemakers, and to lead others by our example, to "avoid foolish questions."