In chapter 8 of "Communion with God", Owen began exploring the "excellencies of Christ", giving us glorious truths about Jesus in the hopes that by meditating on Christ's attributes, we would be encouraged to give ourselves up more fully to the Lord Jesus Christ.
Chapter 9 continues Owen's exploration of Christ's attributes, looking specifically at his wisdom and knowledge. But really, what Owen has in mind here is not so much an exploration of the wisdom and knowledge Christ showed in his earthly life, but rather, Owen speaks to the truth that in Christ we truly know God and that to know God is to be truly wise. It is in Christ that we get to see and know the attributes of the eternal God. For example, in Christ, we know God's righteousness and justice in punishing sin. We see this at the cross. Yet we also know his mercy and love and forgiveness for sinners.
All this is hidden in Christ. The great and unspeakable riches of God's wisdom in pardoning sin, saving sinners, satisfying justice, fulfilling the law, regaining his own honour and providing for us a much greater weight of glory are all accomplished in Christ. And all this was accomplished out of an impossible state of affairs. It was impossible for angels or men to discover how God could possibly restore all things to his glory or ever save one sinful creature from everlasting ruin...
Nothing in God concerning our salvation can be known or received except by Christ. All that is necessary for our salvation is in Christ and is shown to us by Christ. All truth outside Christ does not lead to the knowledge of salvation. It only leads to further corruption.
Do we desire to be wise? Do we desire to truly know God, which is the heart of all wisdom? Then our desire should be to know Jesus Christ, because, "To know Christ and to be in Christ by faith is to know the wonder and excellence of the wisdom and knowledge of God in the salvation of sinners."
Chapter 10 marks a turn in Owen's thought. If we are to have a saving knowledge of God in Christ, we must also know ourselves. And what are we to know about ourselves? We are to know just how desperately we need Jesus Christ. We are to know that we are sinners. We are rebellious. We are breakers of God's holy law. We are worthy of eternal punishment for our sin. And most terrifying of all, we are to know that all mankind will face a day of judgment, carried out by Jesus Christ himself.
And yet...this thought should bring us hope and comfort as well, because this means that we will be judged by the one who loves us and gave himself up for us. We are to be judged by the one who has taken away enmity between us and God. If we are putting our faith in Christ, if we have communion and fellowship with him, if we are "walking with him", (and Owen gives several examples of what walking with Christ means), then we can rejoice in knowing that Jesus has indeed reconciled us to the Father. And while for some the day of judgment will be a terrible day, for us, it will be a day of unspeakable joy. All of this is an encouragement to us to continue to pursue communion with Christ, aiming for the day when he comes again, restores all things, and we have perfect and eternal communion with him, unhindered by our enemies of sin, death, and the devil.