2 Corinthians 13:11 - Christian Perfection.

2Co.13:11; Christian Perfection.

2 Cor 13:11 (KJV)  Finally, brethren, farewell. Be perfect, be 
of good comfort, be of one mind, live in peace; and the God of love 
and peace shall be with you. 

The phrase in this passage that jumps out at me is the 
admonition to be perfect. 

Other translations or paraphrases of this phrase go as follows:
Be made complete; NASB
Mend your ways; RSV
Put things in order; NRSV
Aim for perfection; NIV
Strive for perfection; TEV
Try to be complete; NCV
Continue to grow in the Lord; CWR
Grow in Christ; TLB

A better statement to convey the total picture here might be a 
combination of these translations: 

I like; Be made complete - as you continue to grow in Christ - 
mending your ways and striving for perfection. 

We find a similar statement, in regards to growing in Christ and 
striving for perfection, given as a command by our precious Lord in 
Mat.5:48; Be ye therefore perfect, even as your Father which is in heaven 
is perfect. 

The word perfect here implies full development, growth into 
maturity of godliness.  [Scofield SB] 

Perfection requires a relationship with Christ i.e. we need to 
be born again or converted.  We need to have chosen to give up our 
old selfish and sinful ways of living and let Christ through the 
Holy Spirit guide and direct our daily lives.  For this to 
materialize we need to breathe the spiritual air of prayer and feed upon the 
spiritual food of the Bible and from these will flow the springs of living 
water in sharing and service. 

Child of mine, This journey we are on together is forward 
looking. The destination is ever before you. You have not arrived, but 
you are on your way. Press on. Take hold of that glorious purpose 
for which Jesus Christ has taken hold of you. His purpose is that 
you know him, that you become like him, that your life become a 
channel through which his love can flow to others. His purpose is that 
you spend eternity enjoying me, starting now! God [Postcards from 
Heaven by Claire Cloninger re Phi.3:12]