The Reason is, they are "DECIEVED"
1 CORINTHIANS 6:9,10 "Do you know that the unrighteous will not inherit the kingdom of GOD? Do not be decieved. Niether fornicators, nor idolaters, nor adulteres, nor homosexuals, nor sodomites, nor thieves, nor covetous, nor drunkards, nor extortioners will inherit the kingdom of GOD."
Janet Lakey said:
The reason they are deceived? They do not read God's word and study to show themselves approved. When we put God's word in our heart, the deciever, the false prophets, can not deceive us.