1. Romans 6:3, Galatians 3:27, Colossians 2:12 are all referenes to the baptism with the Holy Spirit. This is the "one baptism" that Ephesians 4:5 speaks of - water baptism is simply its picture.
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2. Some may claim that there are no more occurrences of people being baptized with the Holy Spirit. That is it happened only two times, the first being at Pentecost (Acts 2:4 cf. Acts 1:5) and the send and final with the Gentiles (Acts 11:16). This is a false teaching. For accoring to Acts 10:45 and Acts 11:16 if one has the Holy Spirit "poured" (ekxew) on them it is the same thing as being baptized with the Holy Spirit (Acts 11:16).
pouring (Acts 10:45) = baptism (Acts 11:16).
Paul tells us in Titus 3:6 that all who are Christians have had the Holy Spirit "poured" (ekxew) on them. Thus since all who are Christians have had the Holy Spirit poured on them then it necessitates that Paul is asserting that all who are Christians have been baptized with the the Holy Spirit. This baptism with the Holy Spirit is paramount to the Apostle Paul.
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3. Concerning Romans 6:3 the result of "baptism" allows the Christian to now "walk in the newness of life" (Romans 6:4) which means the same things as to "serve in the newness of the Spirit" (Romans 7:6).
walk = serve
Spirit = life
This "newness of life/newness of the Spirit" is the result of being baptized with the "Spirit of life" (Romans 8:2) because "the Spirit giveth life" (2 Corinthians 3:6).
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4. Regarding the "baptism" mentioned in Galatians 3:27 the context once again demonstrates that Paul is referring to the baptism with the Holy Spirit. This baptism makes one an heir of Abraham according to "the promise" (Galatians 3:29) and the promise are for those who "receive" the Spirit (Galatians 3:14). The Gentiles "received" the Spirit (Acts 10:47) before they were water baptized (Acts 10:48).
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5. Colossians 2:12 also refers to the baptism with the Holy Spirit. Those who have undergone this baptism (Colossians 2:12) are the same one's that have experienced "the circumcision of Christ" (Colossians 2:11). Those who are of the circumcised "worship God in the Spirit" (Philippians 3:3). The Gentiles were worshiping God in the Spirit (Acts 10:46) before they were water baptized (Acts 10:48). Thus they already received the circumcision of Christ that Colossians 2:11 speaks of before their water baptism. The baptism then in Colossians 2:12 refers to being baptized with the Holy Spirit.
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6. The "one baptism" then that Paul writes about in Ephesians 4:5 refers to the baptism with the Holy Spirit. Some counter that it reads, "one baptism" and if Holy Spirit baptism is now taking place and water baptism is also occurring then that means there are two baptisms when Paul wrote "one baptism". This is easily answered in that there is only one baptism that places a person into the one body. This baptism being the baptism with the Holy Spirit. If one insists that it means "only one baptism" then they have a problem for the Apostle John still had a baptism to undergo even after Ephesians 4:5 was written (Mark 10:38). This baptism refers to his death which had not yet taken place when Ephesians was written.
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2. Some may claim that there are no more occurrences of people being baptized with the Holy Spirit. That is it happened only two times, the first being at Pentecost (Acts 2:4 cf. Acts 1:5) and the send and final with the Gentiles (Acts 11:16). This is a false teaching. For accoring to Acts 10:45 and Acts 11:16 if one has the Holy Spirit "poured" (ekxew) on them it is the same thing as being baptized with the Holy Spirit (Acts 11:16).
pouring (Acts 10:45) = baptism (Acts 11:16).
Paul tells us in Titus 3:6 that all who are Christians have had the Holy Spirit "poured" (ekxew) on them. Thus since all who are Christians have had the Holy Spirit poured on them then it necessitates that Paul is asserting that all who are Christians have been baptized with the the Holy Spirit. This baptism with the Holy Spirit is paramount to the Apostle Paul.
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3. Concerning Romans 6:3 the result of "baptism" allows the Christian to now "walk in the newness of life" (Romans 6:4) which means the same things as to "serve in the newness of the Spirit" (Romans 7:6).
walk = serve
Spirit = life
This "newness of life/newness of the Spirit" is the result of being baptized with the "Spirit of life" (Romans 8:2) because "the Spirit giveth life" (2 Corinthians 3:6).
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4. Regarding the "baptism" mentioned in Galatians 3:27 the context once again demonstrates that Paul is referring to the baptism with the Holy Spirit. This baptism makes one an heir of Abraham according to "the promise" (Galatians 3:29) and the promise are for those who "receive" the Spirit (Galatians 3:14). The Gentiles "received" the Spirit (Acts 10:47) before they were water baptized (Acts 10:48).
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5. Colossians 2:12 also refers to the baptism with the Holy Spirit. Those who have undergone this baptism (Colossians 2:12) are the same one's that have experienced "the circumcision of Christ" (Colossians 2:11). Those who are of the circumcised "worship God in the Spirit" (Philippians 3:3). The Gentiles were worshiping God in the Spirit (Acts 10:46) before they were water baptized (Acts 10:48). Thus they already received the circumcision of Christ that Colossians 2:11 speaks of before their water baptism. The baptism then in Colossians 2:12 refers to being baptized with the Holy Spirit.
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6. The "one baptism" then that Paul writes about in Ephesians 4:5 refers to the baptism with the Holy Spirit. Some counter that it reads, "one baptism" and if Holy Spirit baptism is now taking place and water baptism is also occurring then that means there are two baptisms when Paul wrote "one baptism". This is easily answered in that there is only one baptism that places a person into the one body. This baptism being the baptism with the Holy Spirit. If one insists that it means "only one baptism" then they have a problem for the Apostle John still had a baptism to undergo even after Ephesians 4:5 was written (Mark 10:38). This baptism refers to his death which had not yet taken place when Ephesians was written.