"How do you know?" How do you know God is real? How do you know there is a heaven or hell? And maybe the most important question of all, how do you know you're going to heaven?
To answer those "How do you know?" questions, scripture says:
But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear; having a good conscience, that when they defame you as evildoers, those who revile your good conduct in Christ may be ashamed (1 Peter 3:15-16 NKJV).
This is one of those interesting human dilemmas that we feel trapped by. When we try to explain how we know, there is a fear that others will interrogate us as to why we made such a dreadfully poor decision. Yet look at the words. It says we are to give a reason for our faith. It's not a debate to prove whose reasons are best; it's not a dictate that everyone believes exactly the same on every subject; and it's not collective wisdom. It's why you, personally and individually, believe. How did you come to those conclusions?