17 This is how love is made complete among us so that we will have confidence on the day of judgment: In this world we are like Jesus.

Read 1 John 4:17 Using Other Translations

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.
By this is love perfected with us, so that we may have confidence for the day of judgment, because as he is so also are we in this world.
And as we live in God, our love grows more perfect. So we will not be afraid on the day of judgment, but we can face him with confidence because we live like Jesus here in this world.