'Acquainted' in the Bible

But the evil spirit answered [and] said to them, "Jesus I know, and Paul I am acquainted with, but who are you?"

[because] you are especially acquainted with both all the customs and controversial questions with respect to the Jews. Therefore I beg [you] to listen to me with patience.

Then after three years I went up to Jerusalem to become acquainted with Cephas, and I stayed with him fifteen days,