John 3:16

For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.

Eternity is a word that is hard to grasp in our day to day lives.  The world says time is short and live life now and not worry about the consequences.  Our lives have meaning, and our choices have consequences here and in eternity.   Jesus died to save us so we can spend eternity in heaven.  Our job is to become more like Him on this earth and share His message and be His message to everyone we meet.