1 John 2:23-25

2:23 Everyone who denies the Son does not have the Father either. The person who confesses the Son has the Father also.

2:24 As for you, what you have heard from the beginning must remain in you. If what you heard from the beginning remains in you, you also will remain in the Son and in the Father. 2:25 Now this is the promise that he himself made to us: eternal life.