God offered salvation to all by believing in Jesus Christ, "For it is by grace you have been saved, through faith - and this is not from yourselves, it is a gift of God - not by works, so that no one can boast." (Ephesians 2:8-9). It is the quickest way to convert someone who have limited time on earth and only met Jesus on a specific moment. A good example is the criminal who was crucified along with Jesus, he believed and instantly got saved.