'Acquainted' in the Bible

John answered them, “I baptize [only] in water, but among you there stands One whom you do not recognize and of whom you know nothing.

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.”

Yet you do not know Him, but I know Him fully. If I said I did not know Him, I would be a liar like you. But I do know Him and keep His word.

Now we know that You know all things, and have no need for anyone to question You; because of this we believe [without any doubt] that you came from God.”

Now this is eternal life: that they may know You, the only true [supreme and sovereign] God, and [in the same manner know] Jesus [as the] Christ whom You have sent.

Simon Peter and another disciple followed them as they brought Jesus to Annas. (Now the other disciple was acquainted with the high priest, and he went with Jesus into the high priest's courtyard.)

But Simon Peter was left standing outside by the door. So the other disciple who was acquainted with the high priest came out and spoke to the slave girl who watched the door, and brought Peter inside.