I would say anyone who tries to associate the name of God, Lord, Jesus Christ, Holy Spirit, the Father with evil, or wickedness, while saying their message is from the Lord.
They use his name as a means to deceive others to come to darkness instead of the true light of God.
2Co_11:13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
2Pe_2:1 But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.
2Co 11:14 And no wonder, for even Satan disguises himself as an angel of light.
2Co 11:15 So it is no surprise if his servants, also, disguise themselves as servants of righteousness. Their end will correspond to their deeds.
Exo 20:7 "You shall not take the name of the LORD your God in vain, for the LORD will not hold him guiltless who takes his name in vain.