Read: Ephesians 4:30
Everyone loves good surprises. The greatest surprise that you will ever experience is the surprising joy that comes when God, through His Holy Spirit, fills your heart to the fullest. It is when He comes to live inside of you when you accept Christ as your Lord and Saviour. The Holy Spirit is the seal upon you for the day of redemption which is drawing near.
The Bible says that the Holy Spirit can be grieved. How? Through our sinful and ungodly ways after we have known Christ. Every time a believer sins or disobeys God, it grieves the Spirit. Any sin, great or small, committed by a believer grieves the Spirit of God. Is there any area in your life where you know that you are grieving His Spirit? Can you ask the Lord for His forgiveness? Can you ask Him to help you in that area so as not to grieve His Holy Spirit again?