I will once again start from below this above, all you have done is shown scripture and turned the words to fit your interpretation without actually reading the word that are written. Baptism only follows salvation, I showed you that in Acts 10, they were filled with the Holy Spirit and Peter said, that is exactly what happened at Pentecost, they were filled with the Holy Spirit and he then was asking the Jews who said Gentiles could not be baptised, who can hinder these from being baptized. You need to just actually read the words in the text. But I can see the scripture gives you a problem of what you teach not being correct. This is all I am going to say on this subject, each that reads it can be their own judge as to what the scripture says. And one last point, you made it sound as if I said we were not saved by grace through faith, I showed you the same verses you posted as one of my text verses, Eph 2:8 for by grace are you saved through faith and that not of yourself, it is a gift of God not of works lest any man should boast, and you then try to say I did not understand the verse by quoting the same text. Every tub sets on its own bottom.
Question: Using Scripture, what is the purpose and significance of Baptism?
Allow me to share a bit about myself. While I am Lutheran today, that was not always the case. I grew up and was raised in the Evangelical tradition, specifically my first childhood church was a non-denominational church, my school was Baptist, and my second childhood church was Pentecostal (Foursquare specifically). What that means is that I used to believe as you do, or at least very similarly.
The problem, as I came to see it, with many of the things I was raised to believe is that much of the "Biblical doctrines" I had been raised to believe weren't biblical at all. More problematic was that much of what I had been taught growing up was directly contradicted by what the Bible did actually say.
Baptism is an example of this. What I was raised to believe about baptism, and what the Bible actually says about baptism were very different.
I was raised to believe that baptism was merely an outward and public demonstration of faith. The problem with that is two-fold:
1) The Bible never calls baptism an outward and public demonstration of faith.
2) The Bible says things that directly contradict that view.
As I came to study the Bible for myself--which led me to eventually becoming Lutheran--I discovered I had lots of questions about the Bible that the answers I had been given simply didn't seem to fit. Baptism is an example of that, I came to have a lot of questions about baptism on the basis of what the Bible says, and what my parents, teachers, pastors, etc gave me didn't answer in any satisfying way. And over the years I have gotten lots of answers that come in all kinds of shapes and sizes. And frequently it came across as a lot of mental gymnastics to avoid the plain reading of Scripture where it seemed like there was little ambiguity to be found. I recognize that there are plenty of things in the Bible which are difficult and ambiguous, which have no clear or definitive answers; but there are things which are presented in straightforward ways.
For example, when the Bible says that Jesus was raised on the third day, this isn't a puzzle or ambiguous statement. The text is very plain: Three days after Jesus died, He stopped being dead, His body got up and He walked out of the tomb, and the tomb was empty. Jesus' disciples saw the Risen Jesus in the flesh. Though, I do still find Christians who insist on telling me that this isn't what the Bible means. As though Jesus inviting His disciples to touch and feel His body of flesh and bone and saying, "A ghost does not have flesh and bones as you see I have". I'm sure, of course, that you and I can agree that when Jesus rose from the dead, that His tomb was literally empty, Jesus' body was literally raised back to life, He was raised glorious from the dead.
So then, for example, I crack open my Bible and I see things like Jesus saying that one is born again of water and the Spirit (John 3:5) and according to the traditions of my former churches I was told this refers to physical birth (of water) and spiritual birth (of the Spirit), claiming that the water is the amniotic fluid. I accepted this for a long time, until I learned that nobody ever believed this in Christianity until modern times. And then, when I gave it a little bit more thought, it didn't make any sense. Why would Jesus say that to be born again a person has to first be physically born? Jesus isn't talking to a fetus, he is talking to Nicodemus. And as a rule of thumb, when we preach the Gospel we are preaching to human beings who have already left the womb. But you know what did make sense? It's that Jesus is talking about baptism, after all Jesus says water. And water means water, it's not code, it's not a puzzle, water in John 3:5 means water, H2O. This made even more sense when I learned about the meaning and significance of water in Judaism, specifically ritual washing (called tevilah in Hebrew) in the context of a ritual bath (called a mikveh in Hebrew).
Allow me to expand upon that a little: Nicodemus, a rabbi, comes to Jesus by the cover of night and flatters Jesus a bit. To which Jesus tells Nicodemus that to enter God's kingdom a person must be born again (the Greek wording here seems to have a double meaning, meaning to be born again and from above). Nicodemus' response to this is to ask how this is possible, "shall a man who is fully grown go back into his mother's womb to be born a second time?" Is Nicodemus being dull? Is his interaction with Jesus here not sincere and so he's trying to play word games with Jesus? Regardless of Nicodemus' intent here, Jesus then continues: In order to see God's kingdom one must be born of water and the Spirit. Jesus then asks Nicodemus, "How are you a teacher of Israel and yet you do not know these things?" Why does Jesus expect Nicodemus to understand what being born again means? What in Nicodemus' training as rabbi, "a teacher of Israel", should have clued him in on Jesus' meaning? This becomes very clear when we understand the meaning and significance of "baptisms" (aka washing in water) within Judaism. Jews were expected to "baptize" themselves in a ritual bath (a mikveh) before entering the Temple for worship, to purify themselves; priests did the same when they had to perform Temple duties, and there were lots of reasons to do this. But one of the reasons for ritual bathing in a mikveh was for the purpose of conversion.
You see conversion to Judaism always involved a process, for example male converts had to be circumcised (infants and young children included). But regardless of whether one was male or female, conversion from being a Gentile to being a Jew involved a ritual washing in the mikveh. The meaning of this is still present in Judaism to this day: Through the mikveh one effectively dies to their old life as a non-Jew and is born anew as a Jew, to their new life as a Jew. Does that language sound familiar? It should. That is precisely the kind of language the New Testament uses when talking about Christian Baptism.
And, wouldn't you know it, when you look at what Christians have consistently believed about baptism, and about the meaning of Jesus in John 3:5, what I've said here is precisely what generations of Christians have said from the beginning. Allow me to show you a small sampling covering much of the first thousand years:
"Then they are brought by us where there is water, and are regenerated in the same manner in which we were ourselves regenerated. For, in the name of God, the Father and Lord of the universe, and of our Saviour Jesus Christ, and of the Holy Spirit, they then receive the washing with water. For Christ also said, 'Except ye be born again, ye shall not enter into the kingdom of heaven.' Now, that it is impossible for those who have once been born to enter into their mothers’ wombs, is manifest to all." - Justin Martyr, First Apology, Ch. 61 (circa 140 AD)
"It was not for nothing that Naaman of old, when suffering from leprosy, was purified upon his being baptized, but [it served] as an indication to us. For as we are lepers in sin, we are made clean, by means of the sacred water and the invocation of the Lord, from our old transgressions; being spiritually regenerated as new-born babes, even as the Lord has declared: 'Except a man be born again through water and the Spirit, he shall not enter into the kingdom of heaven.'" - Irenaeus of Lyons, Fragments 34, (circa 170-180 AD)
"Wherefore baptism cannot be common to us and to heretics, to whom neither God the Father, nor Christ the Son, nor the Holy Ghost, nor the faith, nor the Church itself, is common. And therefore it behooves those to be baptized who come from heresy to the Church, that so they who are prepared, in the lawful, and true, and only baptism of the holy Church, by divine regeneration, for the kingdom of God, may be born of both sacraments, because it is written, 'Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.'" - Cyprian of Carthage, Concerning the Baptism of Heretics (circa 250 AD)
"Now they take alarm from the statement of the Lord, when He says, 'Except a man be born again, he cannot see the kingdom of God;' because in His own explanation of the passage He affirms, 'Except a man be born of water and the Spirit, he cannot enter into the kingdom of God.' And so they try to ascribe to unbaptized infants, by the merit of their innocence, the gift of salvation and eternal life, buat at the same time, owning to their being unbaptized, to exclude them from the kingdom of heaven." - Augustine of Hippo, A Treatise on the Merits and Forgiveness of Sins, Book 1, Chapter 26 (writing against the Pelagians in 412 AD)
"He redeemed us from corruption through His own passion. He caused the fountain of remission to well forth for us out of His holy and immaculate side, water for our regeneration, and the washing away of our sin and corruption; and blood to drink as the hostage of life ternal. And He laid on us the command to be born again of water and the Spirit, through prayer and invocation the Holy Spirit drawing nigh unto the water. For since man's nature is twofold, consisting of soul and body, He bestowed on us a twofold purification, of water and of the Spirit: the Spirit renewing that part of us which is after His image and likeness, and the water by the grace of the Spirit cleansing the body from sin and delivering it from corruption, the water indeed expressing the image of death, but the Spirit affording the earnest of life." - John of Damascus, An Exact Exposition of the Orthodox Faith, Book 4, Chapter 9 (circa 730 AD)
You may not consider any of these statements of any importance or value. But I do. For me being a Christian means being part of a community of saints stretching back through history, and the sharing of a common faith. I am merely one link in a chain of faith going backward to Christ and forward also to Christ. From the Apostles themselves till now, and from now until the Lord comes again.
-CryptoLutheran