Personal Experiences and the Spirit of Discernment
All believers may receive discernment, but as a gift from God and not an ability we possess inherently, like all his power and miracles. We cannot use them wantonly or for our own purposes, and this is what we do when we pretend to know all or be able to instantly tell if someone is lying. We only know what the Spirit is willing to tell us and what we are willing to hear.