That y'all may know that you have eternal life!
1 John 5:11-13
11 And the testimony is this, that God has given us eternal life, and this life is in His Son.
12 He who has the Son has the life; he who does not have the Son of God does not have the life.
13 These things I have written to you who believe in the name of the Son of God, so that you may know that you have eternal life.
New American Standard Bible: 1995 Update (La Habra, CA: The Lockman Foundation, 1995), 1 Jn 5:11–13.