1. According to verse 4, why should we not believe every spirit, and how can we discern the spirits that are of God?
  2. What is the test to know the Spirit of God, as mentioned in verse 2?
  3. How can we identify the spirit of antichrist, and why is it important to be aware of its presence in the world, as stated in verse 3?
  4. What is the source of our victory over false prophets, as mentioned in verse 4?
  5. How does speaking of the world indicate the origin of certain spirits, as described in verse 5?
  6. How can we discern the spirit of truth from the spirit of error, as mentioned in verse 6?
  7. What is the connection between love and being born of God, as stated in verse 7?
  8. Why is love such a crucial aspect of our relationship with God, according to verse 8?
  9. How was the love of God manifested toward us, and what was the purpose of sending His Son, as mentioned in verse 9?
  10. What is the true nature of love, and how does it relate to God sending His Son, as stated in verse 10?
  11. If God loved us, what should be our response, according to verse 11?
  12. How does loving one another impact our understanding of God's presence within us, as mentioned in verse 12?
  13. What is the evidence that God dwells in us and we in Him, as stated in verse 13?
  14. What is the testimony about the Son of God, and why is it significant, as mentioned in verse 14?
  15. What happens when we confess that Jesus is the Son of God, according to verse 15?
  16. What have we known and believed about God's love, and how does it relate to dwelling in love, as stated in verse 16?
  17. How is our love made perfect, and what impact does it have on our confidence in the day of judgment, as mentioned in verse 17?
  18. How does perfect love cast out fear, and why is fear associated with torment, as described in verse 18?
  19. Why do we love God, according to verse 19?
  20. What is the contradiction in someone who claims to love God but hates their brother, as mentioned in verse 20?
  21. What is the commandment that we receive from God regarding love, as stated in verse 21?

These questions can help explore the themes of discerning spirits, the Spirit of God, the spirit of antichrist, victory over false prophets, the origin of spirits, the spirit of truth and error, the connection between love and being born of God, the manifestation of God's love, the purpose of Jesus' sacrifice, the nature of true love, dwelling in God, the testimony about the Son of God, the impact of confession, the knowledge and belief of God's love, the perfection of love, the absence of fear, the source of our love for God, the contradiction in hating one's brother, and the commandment to love one another.