What does 1 John 5:20 mean?
What is the meaning of 1 John 5:20?

And we know

John writes with certainty: “And we know.” This is not speculation but Spirit-given assurance (1 John 5:13).

• The verb points to settled knowledge possessed by every believer (2 Timothy 1:12).

• Such assurance stands in contrast to the uncertainty of the world (Ephesians 4:17–18).

• Because Scripture is true, we can trust what follows without hesitation (Psalm 119:160).


that the Son of God has come

The fact: Jesus, the eternal Son, entered history.

• Incarnation: “The Word became flesh and dwelt among us” (John 1:14).

• Fulfilled promise: “When the time had fully come, God sent His Son” (Galatians 4:4–5).

• Purposeful mission: “Christ appeared once for all at the end of the ages to do away with sin” (Hebrews 9:26).

His coming is literal, historical, and foundational to salvation.


and has given us understanding

Salvation includes a gift of spiritual perception.

• “Then He opened their minds to understand the Scriptures” (Luke 24:45).

• The Spirit illuminates truth (1 Corinthians 2:12–16).

• Believers move from darkness to light (Ephesians 1:18).

Without this God-given understanding, no one could grasp or embrace the gospel (John 6:44).


so that we may know Him who is true

God’s purpose is relational—knowing the One who is truth itself.

• Eternal life is defined as knowing the true God (John 17:3).

• Idols are exposed as false; only the Lord is “the God of truth” (Isaiah 65:16; 1 Thessalonians 1:9).

Jeremiah 9:23–24 highlights the privilege of boasting in knowing Him.

This knowledge is personal, intimate, and transforming.


and we are in Him who is true—in His Son Jesus Christ

Believers are united with Christ, sharing His very life.

• “Remain in Me, and I will remain in you” (John 15:4–5).

• Our life is hidden with Christ in God (Colossians 3:3).

• “There is now no condemnation for those who are in Christ Jesus” (Romans 8:1).

Union with Christ is not theoretical; it defines identity, security, and daily fellowship.


He is the true God and eternal life

John climaxes with an unambiguous declaration of Jesus’ deity.

• “In the beginning was the Word… and the Word was God” (John 1:1).

• “We await the appearing of our great God and Savior, Jesus Christ” (Titus 2:13).

• Jesus said, “I am the resurrection and the life” (John 11:25-26).

Therefore, eternal life is not merely a future hope but a present possession found in Christ Himself (1 John 5:11–12).


summary

1 John 5:20 anchors our confidence in three certainties: the historical coming of Jesus, the God-given understanding that opens our eyes, and the living relationship we enjoy by being “in Him.” Because Jesus is the true God and eternal life, every promise of Scripture is secure, every believer is safe, and every day can be lived in joyful assurance of His truth.

How does 1 John 5:19 challenge the belief in a benevolent world?
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