Jesus Christ calls us his friends. A person does not tell a servant everything. Only on a need-to-know basis are matters disclosed.
But Jesus has told us everything. Jesus goes on to say that everything His Father has told him, he has also told us. I do not call you servants any longer, for the servant does not know what his master is doing; but I have called you [My] friends, because I have revealed to you everything that I have heard from My Father. (John 15:15 version AMP)