You are not a Christian until you receive a new nature and if you receive a new nature there will be evidence.
You can educate a pig to stay out of the mud and eat differently but on a hot day with fellow pigs he will resort to his normal nature and dive happily into the mud. If you could give him a new nature, say, the nature of a cat, when the test of a hot day and welcome mud came, he would not be happy in the mudhole even if his friends persuade him to join them again, he has a new nature, new desires. He does not think he is better than them, he just does not enjoy those things anymore.
"If any man is in Christ, he is a new creation..." 2 Cor.
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