The book of Jude warns about religious intruders who exhibit five sinful characteristics: grumblers, complainers, walking according to their own lusts, boasters, and flatterers. These individuals undermine God-given authority in the church, spread discontent, and prioritize their own interests over the well-being of others. Christians are encouraged to recognize these characteristics within themselves and to cultivate gratitude, humility, and a heart for serving others. [... more]