In Colossians 3:11, Paul says (echoing v. 4 — “Christ, who is our life…”), “Christ is all, and in all.”  That is, Christ is all-sufficient.  He is everything a believer needs and He is everything to that believer.  And He is in all believers equally — no one gets an extra dose of Jesus.  His sufficiency and power is available to all believers equally.

Christ is all.  He is all a believer needs to be sustained and He is all a believer should desire.  He is supreme.

John Newton affirms that truth in the final two stanzas of his hymn, “What Think You of Christ?”

Some style [i.e., call] him the pearl of great price,

And say he’s the fountain of joys;

Yet feed upon folly and vice,

And cleave to the world and its toys:

Like Judas, the Savior they kiss,

And, while they salute him, betray;

Ah! what will profession like this

Avail in his terrible day?

If asked what of JESUS I think?

Though still my best thoughts are but poor;

I say, he’s my meat and my drink,

My life, and my strength, and my store,

My Shepherd, my Husband, my Friend,

My Savior from sin and from thrall [i.e., bondage];

My hope from beginning to end,

My Portion, my LORD, and my All.