"Having many things to write unto you, I would not write with paper and ink: but I trust to come unto you, and speak face to face, that our joy may be full." (2 John 12)
John was not satisfied with writing gracious words to his fellow believers.
He wanted to see them face to face.
Gather this truth in your mind, about God's love for you and me:
"For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known." (1 Corinthians 13: 12)
Now, we need to understand the context of 1 Corinthians 13: it's not about our love for God, but God's love for us.
And let us never forget, but a gain a greater understanding of this truth:
"And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him." (1 John 4: 16)
Our joy is made full, and our life is made rich, when we see more of Jesus and His love for us.
When we see Jesus in the Word, we are transformed from glory to glory (2 Corinthians 3: 18), and as we see how much God the Father loves His Son, we begin to know who we are, and more importantly, that we are known by God:
"Herein is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world." (1 John 4: 17)
"6And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father. 7Wherefore thou art no more a servant, but a son; and if a son, then an heir of God through Christ. 8Howbeit then, when ye knew not God, ye did service unto them which by nature are no gods. 9But now, after that ye have known God, or rather are known of God, how turn ye again to the weak and beggarly elements, whereunto ye desire again to be in bondage?" (Galatians 4: 6-9)
We are not slaves or servants, but sons of God in Christ. See more of Jesus, and let this joy be fulfilled in you!