“All who declare that Jesus is the Son of God have God living in them, and they live in God.” (1 John 4:15 NLT).

The apostle John gave several “proofs” of new birth for the believer’s assurance. The first proof he gave is that we love each other. For love comes from God. If we don’t love, we don’t know God. The second proof is that God has given us His Holy Spirit “as proof that we live in him and he in us” (1 Jn. 4:13). And the third proof, is that “we declare that Jesus is the Son of God.”
John’s purpose for writing his first epistle was clearly given: “I have written this to you who believe in the name of the Son of God, so that you may know you have eternal life” (1 Jn. 5:13). He wanted us to “know,” to be sure that we are saved.
Do you have this assurance of salvation today?