Walk by the Spirit/Grace
The central or core message in Chapter 5 is found in verses 16-18. Paul is saying “if you walk by the Spirit” – in other words, accepting you are saved by grace and doing the things to feed your spirit, like reading God’s Word, prayer and fellowship with the believers, you will not carry out the desire of the flesh.
If we say verse 16 in the negative state, it would say “if you do not walk by the Spirit”, you will carry out the desire of the flesh. Simply put, the more you involve yourself in the things of the Spirit, the easier it becomes not to carry out the desire of the flesh.
Very interesting in verse 18 it says - But if you are led by the Spirit, you are not under the Law, it does not say under the flesh. In previous verses the word flesh is mentioned all the time and now Paul uses the word Law. Could it be that he is saying trying to be righteous under law is the flesh trying and cannot win? Romans 8: 1-8 says that the Law of the Spirit of life in Christ Jesus has set us free from the Law of sin and death. It goes on further to say what the Law could not do, God did by sending His son. Again, confirmation that the Law cannot save a person.
In verse 19-21 the bible describes the works of the flesh. Trying to overcome flesh in your own ability is not possible. Verse 22 gives us the answer by saying the fruit of walking in the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control. Verse 25 again encourages the believers that “if we live by the Spirit”, in other words we are saved and the Spirit of God is in us, let us then walk (prayer, read the word) by the Spirit.
To conclude, when we are redeemed by grace we now live by the Spirit, and no more live by the Law. The flesh tries to overcome the things of the law but cannot do so. But walking in the Spirit it is possible to live a victorious life.