Ephesians 4:29, "Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear."
The above familiar verses are interesting when we view them together.
In the II Timothy passage, Paul instructs Timothy about the inspiration and usefulness of the scriptures. The apostle continues by charging Timothy to preach (or proclaim) the word. We can see from these verses several specific uses for the preaching of the word: teaching, reproof, correction, training, rebuke, and exhortation.
We know that some type of false teaching was occurring in the church at Ephesus. This most likely led to unbiblical beliefs and practices. Timothy, whose specific role in the church at Ephesus is unclear, is commanded by Paul to preach the truth of the scriptures to the church. This is significant because it shows us preaching taking place within the context of the church. The goal of Timothy's proclaiming was the promotion of truth and correction of this false teaching.
As we read this passage we must be careful about what we know and don't know. We know that Timothy was to preach to the church. We do not know that he was a pastor or that he preached sermons to the church body as a whole (I mention these here because I've heard them many times before).
Paul obviously hoped that Timothy would preach the truth in Ephesus and that the people would embrace this by following the truth and changing whatever needed to be changed in terms of both what they believed and how they lived.
Keeping all that in mind, we turn to Ephesians 4:29. We see that all our speech is to be for the building up. Especially in the context of the church, our words are to be filled with grace in order to help others mature in Christ. This was essentially what Paul was telling Timothy to do. Paul desired that Timothy's preaching would counteract the false teaching in Ephesus and build up the church in Christ Jesus.
How does all this apply to us today? As we speak to others within the church, our goal should always (in one way or another) be their edification. Our hope should also be that we will be edified.
One way we can edify others is by preaching the word to them. We need to "think outside the pulpit" in discussing this form of preaching. Simply put, we can powerfully edify others by preaching to them. This can take the forms of teaching, reproof, correction, training, rebuking, and exhorting. All these build others up in the faith.
I believe that God desires that we all preach to one another on a regular basis. The foundation and content of this proclaiming should be the word. I think we've all experienced the power of the spoken word from other Christians. We all have the joyful responsibility of preaching this word to one another in order to bring about mutual edification.
In light of all this, as Christ-followers we are all preachers. Let's all preach the truth to one another.