And he said unto them, Unto you it is given to know the mystery of the kingdom of God: but unto them that are without, all these things are done in parables: 

That seeing they may see, and not perceive; and hearing they may hear, and not understand; lest at any time they should be converted, and their sins should be forgiven them. 
– Mark 4:11-12 

Clearly, Jesus intended that only a select few get his message.
He was preventing the others from being forgiven, which is pretty ironic considering Christians believe Jesus came to save everybody from sin. If this verse wasn’t the result of a mistranslation or textual corruption, then I don’t know why Jesus did such a thing, but I fully believe that Jesus knew what he was doing.

Either way, I have three simple questions for Christians, especially those who believe that Jesus came to save all sinners.

1. Why didn’t Jesus want the others to convert and be forgiven of their sins? 
2. How could a Christian honestly say that Jesus came to save everybody from sin, when he clearly didn’t want some to be forgiven of their sins?
3. If those same people accepted that Jesus died on the cross for their sins (according to sin sacrifice theology), wouldn’t that foil Jesus’ plan to keep them from being forgiven? 

I believe these are some extremely simple questions that can be addressed directly, so please do so.