Colossians 2:2-3 (AMP)
[For my hope is] that their hearts may be encouraged as they are knit together in [unselfish] love, so that they may have all the riches that come from the full assurance of understanding [the joy of salvation], resulting in a true [and more intimate] knowledge of the mystery of God, that is, Christ, 3 in whom are hidden all the treasures of wisdom and knowledge [regarding the word and purposes of God]
Acts 4:4 (AMP)
But many of those who heard the message [of salvation] believed [in Jesus and accepted Him as the Christ]. And the number of the men came to be about 5,000.
John 3:1-3 (AMP)
Now there was a certain man among the Pharisees named Nicodemus, a ruler (member of the Sanhedrin) among the Jews, 2 who came to Jesus at night and said to Him, “Rabbi (Teacher), we know [without any doubt] that You have come from God as a teacher; for no one can do these signs [these wonders, these attesting miracles] that You do unless God is with him.” 3 Jesus answered him, “I assure you and most solemnly say to you, unless a person is born again [reborn from above—spiritually transformed, renewed, sanctified], he cannot [ever] see and experience the kingdom of God.”