They're selling Jesus and love to you. Religion is the opiate of the masses, the soul of a soulless world. If God did not exist it would be necessary to invent Him. A laughing stock, or painful embarassment. The universe just is - that's all there is to say.
Religion is useful to the ruling classes.
They'll be pie in the sky when you die. They made it up - they wrote a book to keep you bowing down and on your knees.