Colossians 2

Paul wrote that we should be rooted in Jesus so we won't be deceived by the made up religions of man that sound wise at first, but ultimately just wind up taking our eyes off of Jesus. Jesus did everything that needed to be done by dying on the cross and rising from the dead. If we are united to Him, there is nothing more that can be added to make us right with God.

Most false religions seem to make sense on the surface. If they didn't, no one would follow them. However, when the curtain is pulled back they always fall apart. This is because they aren't based on the truth of Christ. There is no other way than Jesus. Don't let anyone tell you anything different.