There is a glorious liberty of the sons of God, who walk by the Law of Liberty. But before you are a son of God, enjoying Christian Freedom, walking by love, you must be first crucified, to become pure. God, like yourself, does not want sons full of lust, greed, anger, lies, jealousy, envy, etc.; and before he accepts you as a son, you must be chastened and scrouged of all the evil within you - through the cross.

These false prophets tell you that you have the liberty to continue to sin without God's wrath to follow. These same kind of lies were being spread in the Apostles times, 2000 years ago.  Peter references them:

For uttering loud boasts of folly, they beguile and lure with lustful desires of the flesh those who are barely escaping from them who are wrongdoers. They promise them liberty, when they themselves are the slaves of depravity and defilement--for by whatever anyone is made inferior or worse or is overcome, to that [person or thing] he is enslaved.
2 Peter 2:18-19

The false prophets lying about liberty from the law, and freedom to sin were also spoken of by Paul:

Brethren, together follow my example and observe those who live after the pattern we have set for you. For there are many, of whom I have often told you and now tell you even with tears, who walk (live) as enemies of the cross of Christ (the Anointed One).   They are doomed and their fate is eternal misery (perdition); their god is their stomach (their appetites, their sensuality) and they glory in their shame, siding with earthly things and being of their party. Phil 3:17-19

Those who claim to be righteous, by grace, and in liberty from obeying the law are hypocrites, a stumbling block, and they scatter the true sheep from Christ. A hypocrite talks about being religious, while walking in sin. Jesus addressed the hypocrites: You are those who justify yourselves before men, but God knows your hearts. Luk 16:15. These people draw near Me with their mouths and honor Me with their lips, but their hearts hold off and are far away from Me. Mat 15:8. Your hearts have to be cleansed - really cleansed to purity.