Perfected Love

Those who belong to Jesus have confidence on the day of judgment - why? - because as Jesus is. As Jesus is right now in heaven, so are we who belong to him right now in this world. God will never condemn Jesus. Jesus is our victorious and righteous High Priest. If God will never condemn Jesus, will he ever condemn those who flee to Jesus for refuge? No.
John says this confidence in the gospel will show up in our lives as we love one another.
Perfected love is complete love without encumbrances. This is how God loves and this is the love that God will perfect in our lives.