Note 4 at Mt. 4:9: Pride was what caused Satan's original sin according to Isaiah 14:12-14. He wanted to be like the most High. One thing reserved for God alone is worship, and the devil has always sought that. If he can't be the one to receive worship, then he seeks to turn others away from giving true worship to the most High God. He does this through things like covetousness, which is idolatry (Col. 3:5). This is the reason why praise and worship to the Lord is such a powerful tool against Satan. He can't stand to see God worshiped (see note 1 at Mt. 8:2, p. 86).