Watch Out

"Watch out for those who don't preach the fullness of the Gospel. "See to it that no one takes you captive by philosophy and empty deceit, according to human tradition, according to the elemental spirits[a] of the world, and not according to Christ. For in him the whole fullness of deity dwells bodily, and you have been filled in him, who is the head of all rule and authority. In him also you were circumcised with a circumcision made without hands, by putting off the body of the flesh, by the circumcision of Chris..." Colossians 2:8-11 * As Christians, are we required to go to church? Are we obligated? Please point to verses that support the answer.