For you have died, and your life is hidden with Christ in God. When Christ who is your life appears, then you also will appear with him in glory.
I'm interested in your thoughts on this passage. Vv. 1-2 seems clear enough - set your mind on God and heavenly principles rather than the rules of men. This fits with the context, comparing chapters 2 and 3. But Paul gives a couple reasons why we should set our minds on things above: "your life is hidden with Christ in God." And "Christ is your life." And "You will appear with him in glory."
What is Paul getting at with these phrases?