My boss says that he is a Christian but he has been treating me unfairly for years. What should I do?

Since God said we should not kill, is it not a sin when born again Christians in Military services do so?

In Revelation chapter 20, it speaks of books. I know of the book of life but what are the books?

I don't understand the parable of unrighteous steward. Is there any commentary or materials?

Does Luke 9:62 describe backsliders as though they were never saved?

I recently heard it taught that Luke was a gentile and I am having a hard time believing this. My question is was Luke a gentile?

In Mark 9:11-13 we read about the prophecy of Elias. Verse 13 says "as it is written of him". Now, where is it written?

What does Matthew 16:28 mean? What did Jesus mean when He said "Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom."?

Please explain Matthew 11:12. Some people say that this is referring to heaven while others say that it refers to the believers on earth.

In Matthew 2:23 it says "that it might be fulfilled which was spoken by the prophets, He shall be called a Nazarene." I have looked quite thoroughly for this verse in the prophets but cannot find it. Can you help with this?