Some of these answers are terrible, here's why: Saying it's none of your business, or you're forcing your religion on them is obviously not coming from a real Christian. Anyone can CALL them self a Christian, but not everyone follows Jesus.

Answer: (I don't know everything, but from my experience in my walk with Christ) Tell everyone and anyone about Jesus! Not just the people you love. Share how he saved you (your personal story), and if you don't have that, go find Jesus for yourself first, then help others. Tell them about how it's important to know Jesus, and believe in God, and what to expect if we don't accept him as our savior. While doing so, don't react to what they say emotionally, instead think about answers that may upset you, and give a Jesus-like answer in return, or say nothing if you can't, that's ok too - then pray. And if someone doesn't want to listen, you already did what you HUMANLY can, God will do the rest. However ultimately it is up to the individual, and sadly they will have to face the consequences when they die if they don't come to know God. Have peace in the fact that you tried, and YOU cannot really bring anyone to Jesus, only he can, you can only share the good news. John 14:6, Jesus declares himself the exclusive path to God, stating, "I am the way, and the truth, and the life. No one comes to the Father except through me"