Christ urged us to beware of those coming falsely in His name and Paul repeatedly fought the infiltration of false doctrine in the church. He warned about it over and over in multiple letters he wrote.
In his book of Colossians, he instructed all believers that we should walk in Christ and grow in His teachings to prevent us from falling prey to wrong doctrine, human philosophy, and manmade, worldly traditions.
These are perilous times—I strongly encourage you to research and study the scriptures regarding this.
“Therefore, as you received Christ Jesus the Lord, so walk in Him, rooted and built up in Him and established in the faith, just as you were taught, abounding in thanksgiving. See to it that no one takes you captive by philosophy and empty deceit, according to human tradition, according to the elemental spirits of the world, and not according to Christ.”
Colossians 2:6-8 ESV