Friendship is chosen/predistined by Jesus

Christ, who said to the disciples “Ye have not chosen me, but I have chosen you,” can truly say to every group of Christian friends “You have not chosen one another but I have chosen you for one another” The Friendship is not a reward for our discrimination and good taste in finding one another out. It is the instrument by which God reveals to each the beauties of all the others. They are no greater than the beauties of a thousand other men; by Friendship God opens our eyes to them. They are, like all beauties, derived from Him, and then, in a good Friendship, increased by Him through the Friendship itself, so that it is His instrument for creating as well as for revealing. At this feast it is He who has spread the board and it is He who has chosen the guests. It is He, we may dare to hope, who sometimes does, and always should, preside. Let us not reckon without our Host. - C.S. Lewis

“In friendship...we think we have chosen our peers. In reality a few years' difference in the dates of our births, a few more miles between certain houses, the choice of one university instead of another...the accident of a topic being raised or not raised at a first meeting--any of these chances might have kept us apart. But, for a Christian, there are, strictly speaking no chances. A secret master of ceremonies has been at work. Christ, who said to the disciples, "Ye have not chosen me, but I have chosen you," can truly say to every group of Christian friends, "Ye have not chosen one another but I have chosen you for one another." The friendship is not a reward for our discriminating and good taste in finding one another out. It is the instrument by which God reveals to each of us the beauties of others.”

― C.S. Lewis, The Four Loves

"Friendship is unnecessary, like philosophy, like art.... It has no survival value; rather it is one of those things which give value to survival.”

  ― C.S. Lewis, The Four Loves