Grieving the Holy Spirit.
What does it mean?
It means not crediting the Holy Spirit for the things He had done and is doing and therefore not even acknowledging the things He had done is doing.
It’s pretty much dismissing the Holy Spirit. That’s what I used to do when I used to rely on flesh and blood, and not what Christ has simply said. I was stuck at, “If I don’t see it, I won’t believe it.” But then God showed me my sins, the sins of the church. That was when I knew that I needed an answer, Christ himself. That’s what the gospel does for me. It gives me Christ. It’s my paperwork that allows me to claim God as my Savior, Christ as my Savior, The Holy Spirit as my Savior.
Here’s an instance of the Galatians grieving the Holy Spirit, not abiding in what they have received from God, allowing others to bring their minds to “fear” of God, rather than remaining in the love of God:
““You foolish Galatians! Who has bewitched you? Before your very eyes Jesus Christ was clearly portrayed as crucified. I would like to learn just one thing from you: Did you receive the Spirit by the works of the law, or by believing what you heard? Are you so foolish? After beginning by means of the Spirit, are you now trying to finish by means of the flesh? Have you experienced so much in vain—if it really was in vain? So again I ask, does God give you his Spirit and work miracles among you by the works of the law, or by your believing what you heard?” (Galatians 3:1-5)
“Whoever has ears, let them hear what the Spirit says to the churches.” (Revelation 2:29)