What does the Bible say about manifest union to Christ?

In John 14:21, Jesus teaches about manifest union to Himself, declaring that those who keep His commandments demonstrate their love for Him. This love is not mere head knowledge but a deep spiritual reality where Christ manifests His glory and power in believers. This union is vital, as it reflects our eternal and living relationship with Christ. Furthermore, this manifest union is confirmed through a lifelong walk of faith, as highlighted in scriptures like Matthew 10:22 and Hebrews 10:16, emphasizing that the just shall live by faith.