Demas was a member of the New Testament Church. We know very little of him and he is mentioned by Paul in three verses.
Colossians 4:14 Luke, the beloved physician, and Demas, greet you.
Philemon 1:24 Marcus, Aristarchus, Demas, Lucas, my fellowlabourers.
2 Timothy 4:10 For Demas hath forsaken me, having loved this present world, and is departed unto Thessalonica; Crescens to Galatia, Titus unto Dalmatia.
As the Apostle Paul wrote Colossians and Philemon, Demas was a loyal partner in the ministry of Paul. Paul would have invested hours in Demas teaching him the gospel of Jesus Christ. The depth of their conversations would have been amazing as they discussed the details of the scripture. How awesome would it be to be a student of the Apostle Paul?
The three mentions of Demas in the scripture give us enough information to glean a couple things from him.
1. Never forsake your pastor
Everyone (including pastors) need a pastor. We may not always like what they say or do, but God demands loyalty and obedience. Submission brings anointing. As long as your pastor is preaching truth, they are your shepherd. Be a fellow laborer in the Kingdom of God determined reach the lost of your community.
Hebrews13:17 Obey them that have the rule over you, and submit yourselves: for they watch for your souls, as they that must give account, that they may do it with joy, and not with grief: for that is unprofitable for you
Pastors should lead in love and we should follow in love.
2. Stay away from the world
In Genesis, Adam and Eve were given the entire Garden of Eden. When the devil wanted to tempt them, he was waiting for them at the one place that could cause them the most problems. God did not say, "Do not stand near the tree". His instructions were to not eat of the tree. What if Adam and Eve would have avoided the tree? What if they had drawn boundaries around the tree?
Most Christians would agree that drinking alcohol is a sin. Is it a sin to stand in a bar and not drink? How long would it be before you do drink?
Creating boundaries keep us from the temptation of sin and eventually sinning. Sin destroys and takes us to places that we never wanted to go.
The Apostle Paul wrote that Demas "loved this present world". We cannot love God and the world. We do not know what particular sin caused Demas to fall, but it really does not matter. He loved something in the world more than God.
1John 2:15 Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
1John 2:16 For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.
1John 2:17 And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever.
Demas is an example of someone that started strong, but fell. It happens. Grace exists for those in that situation. We do not know if Demas ever made his way back to Jesus Christ. It is my hope that he did, but we can learn from his situation. It will be the faithful that make it to heaven. The faithful may fall, but they always get up.
Philippians 3:13 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,
Philippians 3:14 I press toward the mark for the prize of the high calling of God in Christ Jesus.