The Gospel - the power of God unto salvation

 "For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek." - Romans 1:16 KJV

What is the gospel?

"For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; and that he was buried, and that he rose again the third day according to the scriptures:" - 1 Corinthians 15:3-4 KJV

To be saved by the gospel, we must not only BELIEVE the gospel; we must also OBEY the gospel. (1 Corinthians 15:2).

To obey the gospel, we must be baptized with water and with the Spirit. (John 3:5).

On the Day of Pentecost, Peter preached the gospel of Jesus.

"Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain: whom God hath raised up, having loosed the pains of death: because it was not possible that he should be holden of it." - Acts 2:23-24 KJV

The people asked Peter and the rest of the disciples, “Men and brethren, what shall we do?”

Peter then preached how to obey the gospel.

"Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost." - Acts 2:38 KJV

The gospel, that Jesus died for our sins, was buried, and rose again, is the power of salvation. If we BELIEVE the gospel and OBEY the gospel by repenting of our sins, applying the blood and Spirit of Jesus to our life by being baptized in water in Jesus name and baptized with His Spirit (speaking in tongues as His Spirit gives us the utterance). (John 3:5-8, Acts 2:2, 4, Acts 10:45-48, Acts 19:5-6).

Jesus told His disciples to preach the gospel. Those that BELIEVE the gospel and OBEY the gospel by being baptized shall be saved.

"Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned." - Mark 16:15-16 KJV