Repenting, Baptism, and Obeying
And he bearing his cross went forth into a place called in the Hebrew tongue Go‘-gotha; where they crucified him, and two other with him, on either side one, and Jesus in the midst. Therefore let all the house of Israel know assuredly, that God hath made that same Jesus ye have crucified, both Lord and Christ. Now when they heard this they were pricked in their heart, and said unto Peter, and the rest of the apostles, men and brethren, what shall we do?
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. Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls. For John truly baptized with water; ye shall be baptized with the Holy Ghost not many days hence.
Obeying after repenting, and being baptized
Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world become guilty before God. Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin. For all have sinned and come short of the glory of God; being justified freely by his grace through the redemption that is in Christ Jesus: Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God; Therefore we conclude that a man is justified by faith without the deeds of the law. do we then make void the law through faith?
God forbid: Yea we establish the law. Much more over then, being now justified by his blood, we shall be saved from wrath through him.
What shall we say then? Shall we continue in sin, that grace may abound? God forbid. how shall we, that are dead to sin, live any longer therein? Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in a newness of life. What shall we say then? Is the law sin? God forbid. Nay I had not known sin, but by the law: for I had not known lust, except the law had said thou shalt not covet. If ye fulfill the royal law according to the scripture, THOU SHALT LOVE THY NEIGHBOR AS THYSELF, ye do well: But if ye have respect to persons, ye commit sin, and are convicted of the law as transgressors. For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For preaching the cross is to them that perish foolishness; but unto us which are saved it is the power of God. Therefore leaving the principles of the Doctrine of Christ, let us go on to perfection; not laying again the foundation of repentance from dead works, and of faith toward God, of baptisms, and of laying of hands, and of the resurrection of the dead, and of eternal judgment. And this will we do, if God permit.
*We must repent, be baptized, and keep his commandments. Period. Yeah we will fall, but get back up, and keep doing his commandments because faith without works is dead. Here are the scripture places you read from above.