Friends have one another's back. A friend cares about the desires, feelings and trials of their friend.
A spiritual friend cares more deeply about the spiritual well being of their friend than anything else.
Proverbs 18:23-24 "…23 The poor man utters supplications, But the rich man answers roughly. 24 A man of too many friends comes to ruin, But there is a friend who sticks closer than a brother."
A friend is not in competition with us, they love our successes, encourage our hopes and dreams, even sharing in all the things of life that we encounter.
Romans 12:15-16 "15 Rejoice with those who rejoice; weep with those who weep. 16 Live in harmony with one another. Do not be proud, but enjoy the company of the lowly. Do not be conceited.…"