CHRISTIANITY: FOUR PUZZLING QUESTIONS

Dear readers, I have four questions and I need scripturally sound judgement: 1. Can we lie to save a life? If assassins are after someone and the person runs into your house, will you tell the assassins where you kept the person? 2. Can we allow a doctor to abort our baby because of accident that can claim our lives? Is it also a sin? 3. What is the destination of those who are not born again but live a righteous life according their religions? 4. Joining a service group in your church, is it the same as serving God? Please, carefully answer the above questions in the comment box. Thanks for reading.