It pleased the Father that all fullness should dwell in Jesus.  

Colossians 1:13-20 Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son:  In whom we have redemption through his blood, even the forgiveness of sins:   Who is the image of the invisible God, the firstborn of every creature:   For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:  And he is before all things, and by him all things consist.   And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence.   For it pleased the Father that in him should all fulness dwell;   And, having made peace through the blood of his cross, by him to reconcile all things to himself; by him, I say, whether they be things in earth, or things in heaven.

Note that Jesus is going to reconcile all things to Himself.  This reconciliation cannot be separated from the blood of the cross.  It pleased the Father that all fullness should dwell in Jesus.  We could say that the fullness of everything dwells in Jesus.  Everything in Heaven and Earth will be reconciled to God through the blood of Jesus, and all the fullness of this will dwell in Jesus.  Everything in the universe will be brought into this unity, not only the physical realm, but the realm of the heavens.  It pleased the Father that all fullness should dwell in Jesus.

God Has Restored Much That Is Necessary So That The Church Can Come Into The Fullness.