What does it mean to be spiritually minded?
Being spiritually minded means prioritizing the things of the spirit above material concerns like salary, homes, and possessions, which are not wrong in their rightful place. It results in life and peace, specifically eternal life, whereas being carnally minded brings spiritual death and eternal doom.
Les explains that the world today is largely unconcerned about things of the spirit, focusing instead on how much salary they can make, how big a home they can live in, how many cars or boats they can drive. Those things are not wrong in their rightful place, but when they become the first priority and blind people to spiritual truths, they will be sorry and wish they had straightened out their priorities. Scripture contrasts being carnally minded, which is death—spiritual death and eternal doom without end—with being spiritually minded, which is life and peace, and that life is eternal life.