I think we should always work harder to make God our personal friend. God knew everone, but He acknoledged Abraham as His personal friend, and even revealed plans to him, like when He was on the way of destroying Sodom and Gomorrah, He stopped by Abraham's house and told him. It means that when one is a friend of God, chances are more that you will be remembered on judgement day, because God will point at you personally with your full accountability written on His palm. We need to be fruitful and faithful workers in the Kingdom of God, because such persons can never get off their employer's mind.