Summary: This sermon is about how the Holy Spirit seals us in our baptism.
THE SEAL OF THE SPIRIT
Once we have been baptized, we are sealed by the Holy Spirit. That is one of the things that the Bible tells us concerning Baptism. What does it mean to be sealed by the Holy Spirit? That is what we are going to focus on this morning.
There are a lot of documents that are of no value without a seal. A diploma, a deed, a will, a title and other documents are useless unless they have a seal. A notary uses his or her seal to validate documents. When I was in college, I had to have a student ID card made. It had my signature and my picture on it. However, until validated, meaning that my tuition was paid, it was useless. When it was validated, it would have a sticker attached that said, "validated." That is what our baptism is and does, it is God’s stamp. What does this seal mean, concerning Baptism?
GOD HAD PLACED HIS SEAL ON JESUS.
One of the roles that John the Baptizer had was to be the forerunner of the Messiah. John was to lead people to repentance. "John came baptizing in the wilderness and preaching a baptism of repentance for the remission of sins" (Mark 1:4 (quickview)  NKJV). John the Baptizer said that he baptized with water. He was pointing out that his baptizing was a baptism of repentance. It (baptism by water) was usually thought of as an act of cleansing for people who were proselytes. If you were a Jew, according to the interpretation of the Pharisees, then you did not need baptism. Jews were already God’s people. John the Baptizer came baptizing Jew and Gentile alike. (Lloyd J. Ogilvie. Ed. The Communicator’s Commentary: John. Volume 4. Roger L. Frederickson. "The Beginnings". Dallas: Word Publishing, 1985, p. 52). John was truly preparing the way for the Lord’s coming (Malachi 3 (quickview) : 1), in the spirit and the power of Elijah (Luke 1:17 (quickview) ).
A second role that John the Baptizer had was to reveal who the Messiah is (John 1:34 (quickview) ). That is exactly what John the Baptizer does when testified that Jesus is the Son of God (John 1:34 (quickview) ). When John baptized Jesus, he saw the Spirit descend and remain on Jesus. John the Baptizer had said that the Lord who sent him to baptize with water. He also said that the Lord had told him that "Upon whom you see the Spirit descending and remaining on Him, this is He who baptizes with the Holy Spirit" (John 1:33 (quickview)  NKJV). That is why John the Baptizer says of Jesus, "I indeed baptize you with water, but He will baptize you with the Holy Spirit" (Mark 1:8 (quickview)  NKJV).
Being baptized with the Holy Spirit is to be sealed with the Holy Spirit! To be baptized by the Holy Spirit means that we have been born again.
TO BE SEALED BY GOD’S SPIRIT MEANS THAT WE ARE SECURE.
"The Greek word for seal means to confirm or impress". (Billy Graham. The Holy Spirit. Dallas: Word Publishing, 1988, p. 74). The same Spirit that sealed Christ (John 6:27 (quickview) ) also seals us. To be sealed by God in the Holy Spirit is a powerful thing!
When the prodigal son came back home, his father reinstated him as a son (Luke 15:11-33 (quickview) , 22). He had a robe, a ring and sandals brought by his servants to given to this son. All three are symbols of grace (Luke 15:22 (quickview) ). Before you and I were baptized, we were prodigal sons and daughters.