Ephesians 1:13-14

Ephesians 1:13-14In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit, who is the guarantee of our inheritance until we acquire possession of it, to the praise of his glory.
Notice the words "heard" and "believed" are the two essential elements of gaining access to heaven (here called "inheritance"). Without fait in Christ it is not possible to possess a gurantee of inheriting entrance to heaven.