There seem to be a difference in the names of the twelve disciples found in Mark 3:16-19 and Luke 6:13-16. The only solution for this contradiction is to ASSUME that Thaddaeus is Judas. Do you have any proof of this?
If a Christian finds himself doubting his beliefs and maybe for a while stops believing, is there any way for him to be saved and forgiven? Is it possible for such a person to regain his salvation, or can a period of disbelief never be forgiven by God?
What is Matthew 16:28 talking about? Does it contradict itself?
What did Jesus mean when He said don't give children's food to dogs?
