the whole purpose of out temporary life here is to prepare for our eternal life.
Pretty basic to anyone who is truly Christian, but then, most who claim to be aren't really.
https://www.gotquestions.org/friendship-world-enmity-God.html
"-After observing rampant worldliness in the lives of his readers,
James launches into a warning (
James 4:1–17) with this harsh assessment: “You adulterous people! Do you not know that friendship with the world is enmity with God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God” (
James 4:4, ESV). Enmity is animosity, the state of being actively opposed to someone. "