Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God. John 1:12
A few years back Elaine and I went to the movie Overcomer with our daughter, her husband, and a granddaughter. It is one of those faith-based films that gets a 30% approval from the ten critics on the Rotten Tomatoes site and a 98% approval from the 2000 viewers. Pretty typical, especially when the gospel is clearly articulated. As soon as one of the characters started talking about the need for having Jesus I am sure the critics started noticing all kinds of poor lighting, poor performances, poor plot lines, and poor music. Other than these things, I am sure they loved it.
One of the interesting things that stood out to me in the story was the contrast between a dying man Thomas Hill and the main character John Harrison. Thomas Hill had come to believe in Christ in his latter years after a lifetime of abusing himself in every way possible. John Harrison, on the other hand, was a successful basketball coach who had been a believer for many years and had just recently fallen on some hard times. At one point in the movie Hill asked Coach Harrison who 
John Harrison was and the coach answered with things like coach, husband , father, and other typical answers until he eventually said he was a Christian. Hill then asked Harrison why he had placed Christ so low on the list. The coach was indignant at first, but the Hill’s words began to work on him as the movie progressed. Thomas Hill was right. The reason Coach Harrison placed Christ so low on the list was because Christ was so low on his list.
Thomas Hill’s difficulties had led him to a sincere faith in Christ, while Coach Harrison difficulties had exposed his weak faith in Christ. In the Greek original of the New Testament the word sincerity means ‘judged in the sunlight’; and the English word is derived from the Latin—’sine cera’, which means ‘without wax’. In the days when art flourished in ancient Greece, it was the common practice to repair with ‘invisible’ wax any vase or statue that had, as a result of carelessness or misadventure, been damaged.
A rich man or a person of high rank might employ a sculptor to chisel the dignatary’s bust in marble. Sometimes, if the chisel slipped, an important part of the bust would be chipped off. Rather than start all over, the sculptor would mend the damage with wax. The flaw could not be detected by a layman except under very close scrutiny. 
This way the sculptor was able to palm off his defective workmanship to the unsuspecting buyer. However, if the client happened to be a knowing person, he would carry the finished statuette out of the studio into the open before paying for it, and would examine it carefully in the sunlight. If he failed to do this sometime in the future he would possibly see the nose drop off his statuette in the heated room of his house. The statue was not `sincere’, not ‘without wax’, and could not bear careful scrutiny or intense heat.
Many Christians have John Harrison faith. They say that Christ is the most important person in their lives, but believe their identity comes from people, possessions or position. If they can squeeze Christ on the list somewhere between some of these things, that’s fine, but He certainly can’t replace any of them. The difficulties the coach was facing shined the light on his identity of Christ. He had be playing the Christian game for a long time and as long as the heat didn’t get too hot, the wax stayed in place. When tough times came his waxy faith was exposed. Likewise, today’s Christianity can often be inauthentic because appearance is more important than actuality.
Many products today are designed to imitate the real thing. There is plastic decking that looks like real wood. Vinyl flooring that appears to be ceramic tile. You can purchase fake fur or jewelry, phony noses, hairpieces, and other body parts. We have even reached the point to make artificial mud designed to fool the neighbors.
Spray-on Mud was created for use on the outside of your SUV or four-wheeler. That way it appears you use your expensive hobby for more than taking up space in the driveway. Spray it on and friends might think you’ve just returned from a wilderness adventure. People want the authentic look without authenticity . It’s the best of both worlds- a cheap way to look real.
There are many expressions of imitation Christianity that we can try to pass off as the real thing. Occasional church attendance when convenient passes for worship. Giving when there is some extra money can substitute for sacrificial service. Christian bumper stickers and symbols can be used as evangelism replacements. 
Christian clichés handed on facebook can appear to be deep biblical wisdom. Talking a good Christian game can be just that- a game. Charles Spurgeon once said, “I would sooner possess the joy of Christ five minutes than I would revel in the mirth of fools for half a century.”
Let the words of Paul in 1 Corinthians 2:1-5 inspire a real walk with Christ, “When I first came to you, dear brothers and sisters, I didn’t use lofty words and impressive wisdom to tell you God’s secret plan. For I decided that while I was with you I would forget everything except Jesus Christ, the one who was crucified. I came to you in weakness—timid and trembling. And my message and my preaching were very plain. Rather than using clever and persuasive speeches, I relied only on the power of the Holy Spirit. I did this so you would trust not in human wisdom but in the power of God.” 
So what is authenticity? Easy. It looks like Jesus!