What does the Bible say about assurance of knowing Christ?

In 1 John 2:3-6, John emphasizes that true believers can have assurance of their relationship with Christ if they keep His commandments. Knowing Christ is not just about intellectual acknowledgment; it's about a transformative relationship demonstrated through faith and obedience. The apostle Paul also provides assurance when he states in 2 Timothy 1:12 that he knows whom he has believed, suggesting that certitude accompanies an authentic faith. Assurance can be elusive, but the Spirit affirms its possibility through the love and obedience evident in a believer's life.