Acts 2:36 Therefore let all the house of Israel know assuredly, that God hath made the same Jesus, whom ye have crucified, both Lord and Christ.
2:37 Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
2:38 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.
2:39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
2:40 And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.
2:41 Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls.
1 Thessalonians 2:11 For you know how, like a father with his children,
2:12 we exhorted each one of you and encouraged you and charged you to walk in a manner worthy of God, who calls you into his own kingdom and glory.
1 Corinthians 2:14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
15 But he that is spiritual judgeth all things, yet he himself is judged of no man.
1 Corinthians 3:1 And I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ.
Three Kinds of People in the world
1. Natural Man
2. Carnal Man
3. Spiritual Man