"Therefore, if anyone is in Christ, he is a new creation; old things have
passed away; behold all things have become new." 2 Corinthians 5:17

Not what I was, but what I am now by the grace of God!

Of the new self (new creation) Scripture tells us:
"...Put on the new self, which in the likeness of God has been created 
in righteousness and holiness of the truth." Ephesians 4:24

'Put on the new self' (it is your possession).
"For all of you who were baptized into Christ have clothed yourselves
with Christ." Galatians 3:27

And in Christ we have many new possessions (here are a few):
Life:
God, "...Made us alive together with Christ (by grace you have been
saved)."  Ephesians 2:5

A new position:
God, "...Raised us up with Him and seated us with Him in the heavenly 
places, in Christ Jesus." Ephesians 2:6

Sonship:
"And because you are sons, God has sent forth the Spirit of His Son into
our hearts, crying 'Abba! Father!"...If a son, then an heir..." Galatians
4:6-7

Access to God:
"...In everything by prayer and supplication with thanksgiving let your
requests be made known to God." Philippians 4:6

Conquerors in Christ:
"But in all these things we overwhelmingly conquer through Him who
loved us." Romans 8:37

Knowledge of God's will:
"He made known to us the mystery of His will, according to His kind
intention which He purposed in Himself." Ephesians 1:9

Every spiritual blessing:
"Blessed be the God and Father of our Lord Jesus Christ, who has 
blessed us with every spiritual blessing in the heavenly places in Christ."
Ephesians 1:3

We have an inheritance:
"Also we have obtained an inheritance, have been predestined according 
to His purpose who works all things after the counsel of His will."
Ephesians 1:11

Are being conformed to Christ's image:
"For whom He foreknew, He also predestined to become conformed to the
image of His Son, that He might be the first-born among many brethren."
Romans 8:29

The Apostle Paul prays for Believers that God would make known to us 
the wisdom and revelation that is ours to possess and the great love of 
Christ; the fullness of the God-Head in us:
Wisdom and revelation:
"That the God of our Lord Jesus Christ, the Father of glory, may give to 
you a spirit of wisdom and of revelation in the knowledge of Him."
Ephesians 1:17
And,
The fullness of the God-Head in us:
"To know the love of Christ which passes knowledge; that you may be 
filled up to all the fullness of God." Ephesians 3:19

Hallelujah!
Victory is ours in Christ:
"But thanks be to God, who gives us the victory through our Lord Jesus
Christ." 1 Corinthians 15:57

All praise, honor and glory to our Triune God; Father, Son and Holy Spirit.
Amen