If you are a Christian... (or want to explain a Christian view of Christmas to your children)
Christmas is a wonderful time to talk about the reason Jesus came... so that the sins of all could human kind could be forgiven and we could one day be together in heaven. One of Jesus' names, Immanuel, means" God with us" and is a poignant reminder that the God of the universe crossed the heavens to become one of us because He loved us and wanted to draw us closer to Him.
Sometime, if not this year, then some year, your children will face the death of a precious grandparent or friend. It is no small thing to be able to share with them that God has prepared a place for each of us in heaven. The Bible says "In my Father's house are many rooms." (John 14:2) Actually, the King James translation says "mansions" - the point is that it is an awesome place and there is room for everyone.
So, how do you get there? Christmas is a great time to explain to children that Jesus came to give us the gift of heaven. We don't have to earn it. We can't deserve it. It's just a gift. We receive it by faith. And when we die, somehow, in some way, we go to be with Jesus in heaven on that very day. ( Remember,Jesus said to the thief on the cross, "Today you will be with me in paradise." (Luke 23:43)