salvation isn't free

 Salvation through Jesus is not free. It's free like free hotdogs and soda at the latest car dealer sales event. You'll get food, but there is a cost. 

Eternal salvation can't be earned or bought, but you have to commit to Jesus. If you never tell anyone how committed are you? 

There are a variety of passages on salvation often in parable form. If you confess Jesus before men, Jesus will confess you before God. What about the book of life? If Jesus doesn't confess you, can your name stay in the book of life? Are you willing to risk it? Ideally Jesus is looking for "all in." You push all your chips into the center of the table and bet it all.

Not everyone that says, Lord, Lord, will enter the kingdom.