I am not a parent, but I have a really amazing story about something that happened recently to give all of you parents with unsaved children some hope.
My youth group had a car wash a few weekends ago to raise money for a youth retreat that we were going on. A man pulled up to get his car washed, and while we were washing it, he got out of the car to talk to us. He kept looking around at us in amazment, and then asked our youth leader Rene "What is up with these kids? There's something special about them, like a light in them or something". Our leader told him that it was all God and started to explain God to him. He was amazed and told her that when he was our age he was out doing drugs and other things. He then started to ask her a bunch of questions about God and he said that he thought God couldn't possibly love him because of everything that he has done. My youth leader told him the truth about that and told him how much God loves him.
This is the part of the story that you're going to want to hear: He told us that his elderly mom had been asking him to go to church with her for ages now and he had been putting it off. But after seeing something in us teenagers, he said that he was going to call his mom and tell her that he would go to church with her that weekend!!!!!!!!

Think about it, that mom had probably been trying to get her son saved for
years, and God ended up using a bunch of kids at a car wash to inspire him instead! He later told us that he wasn't even planning on coming to us to have his car washed, he was just driving past to go to the bank- but then something inside of him said "go let those kids wash your car". God had it all worked out sooooo far ahead of time! God had it worked out so that that guy had his money at the bank that was near where we were washing cars, that our car wash was planned on that day, and that Rene was our leader that day (because she related to his past really well, and it's really cool because she is almost never our leader). God could be working on something like that in your child's life RIGHT NOW that just isn't quite ready yet!
So the moral of the story is- never ever stop praying for your children. Even if your words aren't getting to them, maybe God has another way of getting them saved that doesn't even involve you. Like that guy! His mom had been trying to bring him to God for ages, and all it took was a simple car wash full of teenagers one day! It's very possible that God is planning something like that in your child's life right now, so pray for whatever it is to work out!