Therefore if you have been raised up with Christ, keep seeking the things above, where Christ is, seated at the right hand of God. Set your mind on the things above, not on the things that are on earth. [Colossians 3:1-2 NASB]
Paul begins this section with the word, "Therefore". He is referring back to his previous teaching that legalistic rules and man-made religion have no spiritual value, but only serve to indulge the flesh. Therefore, set your mind on spiritual things.
We have been raised up with Christ. Paul says in Romans;
Therefore we have been buried with Him through baptism into death, so that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life. For if we have become united with Him in the likeness of His death, certainly we shall also be in the likeness of His resurrection, knowing this, that our old self was crucified with Him, in order that our body of sin might be done away with, so that we would no longer be slaves to sin; for he who has died is freed from sin. [Romans 6:4-7 NASB]
We cannot overcome sin through religion. Jesus overcame sin when He died and rose again. When we confess Jesus as Lord, we spiritually die to our old life in the world of sin, and we are born again into new life in Christ. We are free from sin.
Many Christians recognize this as an intellectual truth, but they continue to succumb to temptation and sin. They are living their lives according to Romans 7;
For what I am doing, I do not understand; for I am not practicing what I would like to do, but I am doing the very thing I hate. But if I do the very thing I do not want to do, I agree with the Law, confessing that the Law is good. So now, no longer am I the one doing it, but sin which dwells in me. For I know that nothing good dwells in me, that is, in my flesh; for the willing is present in me, but the doing of the good is not. For the good that I want, I do not do, but I practice the very evil that I do not want. [Romans 7:15-19 NASB]
I have known Christians, even Pastors, who use this verse as an excuse for not living a sinless life. They say, "Even Paul couldn't live a holy life. It's not possible." But they seriously misunderstand the intent of these verses. Paul is not lamenting his sad state. He is using a literary device to describe the futility of trying to be holy by following the Law, or religion. He goes on go to say;
Therefore there is now no condemnation for those who are in Christ Jesus. For the law of the Spirit of life in Christ Jesus has set you free from the law of sin and of death. For what the Law could not do, weak as it was through the flesh, God did: sending His own Son in the likeness of sinful flesh and as an offering for sin, He condemned sin in the flesh, so that the requirement of the Law might be fulfilled in us, who do not walk according to the flesh but according to the Spirit. [Romans 8:1-4 NASB]
He tells us in Galatians, "But I say, walk by the Spirit, and you will not carry out the desire of the flesh." [Galatians 5:16 NASB]
What does it mean to walk in the Spirit? He goes on to say in Romans;
For those who are according to the flesh set their minds on the things of the flesh, but those who are according to the Spirit, the things of the Spirit. For the mind set on the flesh is death, but the mind set on the Spirit is life and peace, because the mind set on the flesh is hostile toward God; for it does not subject itself to the law of God, for it is not even able to do so, and those who are in the flesh cannot please God. [Romans 8:5-8 NASB]
Walking in the Spirit is as simple as setting your mind on Jesus, and leaving it there. The simplicity of the Christian life is a stumbling block to many, especially in the Western culture where it seems that everything is complicated. Politics is complicated, philosophy is complicated and relationships are complicated. So when we deal with God, expecting things to be complicated, we complicate things that should be simple.
Throughout His life, Jesus showed us how to relate to God the Father. It was simple, straightforward, and free of the trappings of religion. When we don't understand this simplicity, we invent religion, with sets of rules and rituals to "help" us relate to God. We devise a clergy, so that we can have an intermediary between us and God.
But true worship, in Spirit and in truth, doesn't depend on rituals or intermediaries. It is simply you, sitting in your living room, talking to God.
Walking in the Spirit doesn't depend on some great spiritual ordeal. It doesn't require fasting or beating your body. It doesn't require great concentration. In fact, any effort you put into it is only of the flesh.
Walking in the Spirit is as simple as thinking about Jesus. We read in Hebrews,
Therefore, since we have so great a cloud of witnesses surrounding us, let us also lay aside every encumbrance and the sin which so easily entangles us, and let us run with endurance the race that is set before us, fixing our eyes on Jesus, the author and perfecter of faith, who for the joy set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God. [Hebrews 12:1-2 NASB]
Set your mind on Jesus, and leave it there. And if your mind wanders? There is no condemnation. Just turn your mind back again to Jesus. As I mentioned, it doesn't take concentration, only awareness. Often, when I drive across town, my wife is sitting next to me. Sometimes we talk, other times we are silent. I pay attention to the road, reading the signs, watching the cars, monitor my speed, and so on. Through all of these distractions, I never forget that my wife is sitting next to me. I am never surprised by her presence.
Walking in the Spirit is similar. You can be driving, working, playing, talking to another person, and be aware of the presence of God. You don't have to divert your attention from what you are doing any more than you have to divert your attention from driving to be aware of whoever is in the passenger seat of your car.
Sometimes, especially in the beginning, you will lose the awareness of God's presence. But that's okay. Just turn your mind back to Him again. The more you practice, it will become habitual to be mindful of Him, and to walk in the Spirit.
Lord, I turn my mind toward You. I pray that You will give me the grace to keep my mind fixed on You all through the day.