To be saved you must believe correctly. To believe you must understand correctly.
Believe: To be totally commited to what you know to be true. (Know: to be intimate with what you understand.)
The purpose of salvation is 3 fold:
1. To be reconciled to God in an intimate worshipful relationship.
2. To be transformed into the character of Christ.
3. To obediently live out God's purpose for Himself in this world.