1 John 5:13

My Notes

What Does 1 John 5:13 Mean?

"These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God." John states the PURPOSE of his entire letter: he wrote so that believers may KNOW they have eternal life. The letter isn't written to PRODUCE faith (that's the Gospel's purpose — John 20:31). It's written to produce ASSURANCE in those who ALREADY believe. The audience has faith. The letter gives CERTAINTY. The believing is present. The knowing is the gift.

The phrase "that ye may know that ye have eternal life" (hina eidēte hoti zōēn echete aiōnion — that you may know that you have life eternal) is the letter's THESIS STATEMENT: the entire epistle was written for THIS purpose — ASSURANCE. John wants believers to KNOW (eidēte — know with certainty, know as settled fact) that they HAVE (echete — present tense, currently possess) eternal life. The life isn't future. It's PRESENT. The knowing isn't hoped for. It's ACHIEVABLE. The assurance is the letter's gift.

The double reference to believing — "that believe on the name" and "that ye may believe on the name" — creates a CYCLE: you believe (present faith) → you know you have eternal life (assurance) → you believe more deeply (strengthened faith). The knowing strengthens the believing. The assurance deepens the faith. The letter doesn't just confirm. It REINFORCES. The assurance produces deeper belief.

Reflection Questions

• 1.Do you KNOW you have eternal life — or are you still wondering?
• 2.What does the letter being for ASSURANCE (not salvation) teach about certainty being available to believers?
• 3.How does knowing producing deeper believing describe the assurance-faith cycle?
• 4.What test from 1 John has produced CERTAINTY in you — and what test still produces anxiety?

Devotional

I wrote these things so you may KNOW — not hope, not wonder, KNOW — that you HAVE eternal life. The letter's entire purpose is ASSURANCE: you already believe. Now KNOW what the believing has produced. The eternal life isn't future. It's PRESENT. The knowing isn't optional. It's the letter's gift.

The 'that ye may know' makes ASSURANCE the purpose of the ENTIRE LETTER: every test John provided (do you love the brothers? do you keep His commands? do you confess Christ?) served ONE goal: so you can KNOW. The tests aren't designed to PRODUCE anxiety. They're designed to PRODUCE certainty. The examination produces the confidence. The testing generates the assurance.

The 'that ye have eternal life' makes the life PRESENT-TENSE and POSSESSED: you HAVE (present tense — currently, right now) eternal life. The life isn't waiting for you in the future. You POSSESS it NOW. The eternal life started when the believing started. The knowing confirms what the having already established. The assurance catches up to the possession.

The 'that ye may believe on the name of the Son of God' closes the CYCLE: believe → know → believe more deeply. The assurance doesn't terminate in KNOWING. It produces DEEPER BELIEVING. The certainty strengthens the faith. The knowing-you-have reinforces the believing-in-Him. The letter is a FAITH-DEEPENER — using assurance as the mechanism for stronger belief.

Do you KNOW you have eternal life — or are you still wondering? And has the knowing deepened your believing?

Commentary

Trusted original commentary from respected historical Bible scholars and theologians.

Cross References

Related passages throughout Scripture