I had a few questions on your thoughts about Matthew 7:15-23.
First off Jesus identifies false prophets by their fruits. He then says that a rotten tree can only bear bad fruit, and a good tree can only bear good fruit. But doesn't a false prophet have to provide some good fruit for people to follow. Can any person be only good or only bad? What then is this fruit?
In verse 23 Jesus says He will tell those calling on His name to "get away from me you workers of lawlessness." How would you respond to someone who says this implies that Jesus will reject those who are not following certain rules? What if they didn't know about certain rules, or think that they were being disobedient? For instance let's say it is actually wrong to celebrate Christmas, but you did because it didnt violate your conscience. Will Christ reject you?