'Perfected' in the Bible

A student is not superior to his teacher; but everyone, after he has been completely trained, will be like his teacher.

But now I am coming to You; and I say these things [while I am still] in the world so that they may experience My joy made full and complete and perfect within them [filling their hearts with My delight].

Finally, believers, rejoice! Be made complete [be what you should be], be comforted, be like-minded, live in peace [enjoy the spiritual well-being experienced by believers who walk closely with God]; and the God of love and peace [the source of lovingkindness] will be with you.

For by the one offering He has perfected forever and completely cleansed those who are being sanctified [bringing each believer to spiritual completion and maturity].

But whoever habitually keeps His word and obeys His precepts [and treasures His message in its entirety], in him the love of God has truly been perfected [it is completed and has reached maturity]. By this we know [for certain] that we are in Him:

No one has seen God at any time. But if we love one another [with unselfish concern], God abides in us, and His love [the love that is His essence abides in us and] is completed and perfected in us.