We come to God first as beggars or not at all, but, once inside, God can tell us things that do not concern us. God deigns to call us friends, and I do not only go to my friend to talk to him about business, but to tell him what I have in my heart, even if it does not concern him at all. "Shall I hide from Abraham that thing which I do?" "I have called you friends."
It is not a matter of indifference to be treated by God as His friends; but we must be in the place first; when there, the Christian's heart gets an occupation that makes him grow. Our hearts need something to think of. Not only is our salvation settled, but God introduces us into a new world where our heart is opened and enlarged by occupation with Himself until it can take in His thoughts.