[This was also intended] to reestablish harmony between both of these peoples and God in [this] one body, through [Christ's death on] the cross. By doing this He put to death the hostility [between them].

[Note: Paul here digresses from his prayer, begun in 1:15-16, to explain the circumstances of his being a prisoner on behalf of these Gentiles]. [I assume] you have heard about my commission [to minister] to you, which was given to me by God's unearned favor.

This was done so that now God's many-sided wisdom could be made known through the church, to the rulers and authorities in the heavenly realms [Note: "Heavenly realms" here refers to the world around us, where these angelic beings (good or bad) view the unfolding of God's wonderful plan],

making the most of every opportunity, because these days are evil.