Faith / Trusting God, Learning To Pray Effectively, Purposeful / Intentional, Repenting from Sin

That You May Know (1 John 5:13–21)

Do you live with quiet confidence in your salvation — or lingering uncertainty about where you stand with God?

Key Verse:
“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.” —1 John 5:13 NASB

Background Context:
John closes his letter by clearly stating his purpose: assurance. He writes so that believers may know they have eternal life. This final section weaves together confidence in salvation, confidence in prayer, discernment regarding sin, protection from the evil one, and a final warning to remain faithful to the true God.

John’s tone is pastoral and urgent. He wants believers to live securely in Christ, pray confidently according to God’s will, and remain alert in a world filled with deception.

(Continued and expanded after scripture.)

1 John 5:13–21

This Is Written That You May Know

      13These 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. 14This is the confidence which we have before Him, that, if we ask anything according to His will, He hears us. 15And if we know that He hears us in whatever we ask, we know that we have the requests which we have asked from Him.

      16If anyone sees his brother committing a sin not leading to death, he shall ask and God will for him give life to those who commit sin not leading to death. There is a sin leading to death; I do not say that he should make request for this. 17All unrighteousness is sin, and there is a sin not leading to death.

      18We know that no one who is born of God sins; but He who was born of God keeps him, and the evil one does not touch him. 19We know that we are of God, and that the whole world lies in the power of the evil one. 20And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.

      21Little children, guard yourselves from idols.

Reflection on 1 John 5:13–21:
John begins with reassurance. Eternal life is not something believers must guess at or hope for — it is something they can know. This confidence is rooted not in personal achievement, but in faith in the name of the Son of God.

From that assurance flows confidence in prayer. John reminds believers that God hears prayers offered according to His will. This does not mean we manipulate God through prayer, but that our requests are shaped by His Word and character. Prayer becomes an act of alignment, not control.

John then addresses the difficult topic of sin among believers. He encourages prayer for those who stumble, emphasizing restoration rather than condemnation. At the same time, he warns against taking sin lightly. The believer’s life is meant to be marked by repentance and transformation, not casual tolerance of wrongdoing.

When John speaks of sin leading to death and sin not leading to death, we should remember an important truth: the penalty for all sin is death. It is only through Christ that sin can be forgiven and no longer lead to death. John is not minimizing sin, nor is he creating a category where sin is harmless. Rather, he is emphasizing the difference Christ makes.

John appears to be encouraging believers to pray for brothers or sisters they see sinning — trusting that God will forgive and restore them when prayer aligns with His will. At the same time, Scripture also warns us of what Yeshua described as the unpardonable sin — blasphemy against the Holy Spirit. This is not a momentary failure or a struggle with temptation, but a continued and willful rejection of the Spirit’s testimony and work, which can also be thought of as the rejection of Yeshua as Lord.

Yeshua said:
“Any sin and blasphemy shall be forgiven people, but blasphemy against the Spirit shall not be forgiven.” (Matthew 12:31–32)

When we consider this warning alongside John’s use of the word brother, it seems likely that John is referring to believers who stumble but have not rejected the Spirit. For such cases, prayer is not only appropriate but also effective. God hears, forgives, and restores according to His will.

This passage, therefore, calls us not to fear but to discern wisely, intercede faithfully, and remain anchored in Christ. God desires repentance and restoration, and He invites His people to participate through prayer.

John reassures believers again: those born of God are protected. The evil one does not have ultimate power over them. Christ guards His people, even as they live in a world under the influence of darkness.

The letter ends with a short but powerful command: “Little children, guard yourselves from idols.” This is not a sudden change of subject. Idols are anything that competes with God for our trust, devotion, or identity — including false ideas about who God is. After emphasizing truth, love, obedience, and assurance, John warns believers not to trade the true God for substitutes.

1 John ends not with fear, but with clarity. God has given understanding so that we may know Him who is true — and live in His Son, Jesus Christ. This is the true God and eternal life.

Application:

  • Live with assurance. God wants you to know you have eternal life.

  • Pray with confidence. Align your requests with God’s will and trust that He hears you.

  • Intercede for others. Pray for believers who stumble, seeking restoration, not condemnation.

  • Take sin seriously. Grace leads to repentance, not complacency.

  • Trust God’s protection. The evil one does not have the final word.

  • Guard against idols. Refuse anything that competes with devotion to the true God.

Closing Prayer:
Father, thank You for the assurance of eternal life through Your Son. Help me live with confidence rooted in Your promises, not in fear or doubt. Teach me to pray according to Your will, to intercede faithfully for others, and to walk in repentance and truth. Guard my heart from idols, and keep me anchored in You, the true God and source of eternal life. In Yeshua’s name, Amen.

May the grace and peace of our Lord, Yeshua, be with you.

John Golda

Do you know for sure if you will go to heaven or hell when you die? Are you experiencing in your life the peace and joy of a personal relationship with our Creator and Father? Learn more about salvation through The Message of the Cross.