Acts 2

36 Therefore let all Israel know with certainty that God has made this Jesus, whom you crucified, both Lord and Christ!” 37 When the people heard this, they were cut to the heart and asked Peter and the other apostles, “Brothers, what shall we do?” 38 Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. 39 This promise belongs to you and your children and to all who are far off—to all whom the Lord our God will call to Himself.”

John 20

30 Jesus performed many other signs in the presence of His disciples, which are not written in this book. 31 But these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in His name.

John 17

22 I have given them the glory You gave Me, so that they may be one as We are one— 23 I in them and You in Me—that they may be perfectly united, so that the world may know that You sent Me and have loved them just as You have loved Me.