In the second half of Ephesians 4, from verse 17, Paul is speaking about how we can live as believers as children of light. First of all, there must be a change of direction Ė no longer living the old way. That is the old self that must be put off, and instead, we are to be renewed in the attitudes of our minds (v23). It means we are to have a whole new way of thinking, making choices and living with the glory of Jesus as our priority. This involves putting on the new self in verse 24, and this verse goes on to tell us that this new self is being created to be like God in true righteousness and holiness.
Wow! What God wants to create in us is to make us like himself, as far as righteousness and holiness goes. I donít know how you feel, but sometimes I feel like I havenít made much progress into this new life Ė even after quite a few decades. But this is a call to persevere, because there is much more to experience in our relationship with God and in our Christian walk.
Paul continues with some helpful hints of things we need to watch, and then tells us in verse 29 to watch what comes out of our mouths. What we say can pull people down or build them up: speak only what is helpful for building people up according to their needs, that it may benefit those who listen.
But verse 30 is to me the key to this walking in the new life. Paul writes: And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. Because we need him so much to guide us, teach us, empower us in all the things of the Kingdom of Jesus Christ, we need to live in such a way that we donít grieve the Holy Spirit.