this is how one becomes perfectedThe only one that the Bible says was perfect is Job.
1 John 4:12
[ Seeing God Through Love ] No one has seen God at any time. If we love one another, God abides in us, and His love has been perfected in us.
1 John 4:17
[ The Consummation of Love ] Love has been perfected among us in this: that we may have boldness in the day of judgment; because as He is, so are we in this world.