Pentecost +10 - Year C
If we were to intersect this passage by Paul with the Sermon on the Mount by Jesus we would get a different feel for the import of this passage.
The first part tends to set us in the direction of splitting body from spirit and claiming spirit takes priority. All this talk about above, not on earth, hidden, and glory tend to separate us from ourselves and to try to get us to do the behavioral injunctions in the last part of the passage at a surface or temporary level (just until some revelation of Jesus - second coming in some perspectives).
If we were to bring the Sermon on the Mount to bear on the first part - so we are setting our minds on such earthly issues as poverty (whether communal or spiritual), mourning, peace-making, being persecuted for doing good - when we get to the no lying part (no anger, wrath, malice, slander, abuse) we would know that there is a depth of integrity that we need to attend to that will take all we have to give and then some. These are issues that are not going to go away soon - they are intimately tied up with who we are becoming right here in Paradise and not just practicing for some future Glory.
The Message comes closer here as we try to reveal Christ present, not wait for Christ to come. We are called to become better, not out of fear of G*D's anger, wrath, malice, slander, and abuse, but because it is where our blessing, happiness, journey is going.