Today we still find ourselves in the book of Ephesians looking at verses 28-32 as new material. In these verses, Paul continues to focus on the practical as to how a believer should be walking in their faith and not as "other Gentiles."
Verse 28: Let him that stole steal no more: but rather let him labour, working with his hands the thing which is good, that he may have to give to him that needeth. Paul uses the example of thievery to make his point about the change that should have taken place in the believer.
Verse 29: Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. Another example of how we as believers should act. Again, these actions do not save us, but they should be the biproduct of our salvation and our putting on the new man (verse 4:24). Our words to others should be edifying and not destructive, and I know that this can be done if we are walking in the Spirit (Galatians 5:16), putting on the new man.
Verse 30: And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption. In 1:13, it speaks of a sealing as well. There is also a sealing mentioned in Revelation 7 that protects against physical harm. This sealing is obviously not from physical harm, but it is obviously a spiritual one, i.e., eternal security (Colossians 2:10).
Also, as we have paid close attention to the pronoun throughout this study, there must be a difference between what is said in Ephesians 1:13-14 and here. The nation was sealed by the holy Spirit of promise which was an earnest of their inheritance until their redemption, while we in the Body of Christ have been sealed with the Holy Spirit at the moment of our salvation. Again, just trying to stay consistent in interpretation.
Verse 31: Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice: This verse presents a bit of challenge because of the last three words, with all malace. Most translations make it look like it is one another vice like the ones mentioned before. However, the KJV makes it seem like it is merely referring to the ones before. With this rendering, it means that none of the before should be done with the intention or desire to do evil. This would make sense considering verse 26 in which Paul said that we can be angry without actually sinning.
Verse 32: And be ye kind one to another, tenderhearted, forgiving one another, even as God for Christ's sake hath forgiven you. Instead, Paul says that it is better to be kind to one another, tenderhearted, and forgiving just as Christ has forgiven us. Which leads right into the next chapter.