1 John 4:12
No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfected in us.
Previously, God’s love was manifested through Christ but Christ ascended to glory to sit on the right hand of God. Now, due to the ascension of Christ, God’s love is manifested to the world through believers. When we love one another, then God’s love is perfected in us.