The apostle Paul couldn’t have anticipated that so many people would be able to “stay” and preach through the medium of Facebook, rather than being “sent” to preach in an actual field of labor. If you plan to spread the good news via Facebook, Paul still gives the pattern for appropriate Facebook “preaching”:
And how shall they preach, except they be sent? as it is written, How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things! – Rom 10:15 KJV
Notice that the blessed feet are of those who preach the “gospel of peace” and “bring glad tidings.”
There is another pattern of presenting the Word of God that is not appropriate for Facebook. It is from 2 Timothy 3:16:
All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness.
The underlined words present a progression through learning truth, seeing proof, changing and growing in the truth with the convictions that grow out of God’s Word. There is no way to take someone through this progression via Facebook. Sure, there are many preachers that present training online and attempt to reach people through webcasts, webinars, podcasts, and in-depth written materials. However, the real avenue for this process is discipleship and fellowship in the local church.
Facebook status posts cannot provide that. Besides, the tone of many of the posts I read destroy any benefit they might have provided. Promote evangelism, but don’t criticize others methods. Quote scriptures, but don’t condemn with them. Give good reports from church, but don’t belittle any other church or denomination. Proclaim the good tidings in the public square of Facebook. If you feel you have a calling to oversee and correct other people, take that to your pastor and pray really hard about it. And leave it off of Facebook.