But be doers of the word, and not hearers only, deceiving yourselves. James 1:22
To claim to follow Christ and have faith in Jesus and not walk in obedience to God's word and the leading of the Holy Spirit is not biblical. It is not biblical Christianity to claim to be in Christ and live in sin. There should be a progressive and continual sanctification process in which the Lord sets us a part to Himself.
He is Holy and therefore we are called to be holy. This world and culture we live in are satanically influenced. So to claim to be in Christ but still indulge in the world and its ways is contradictory to God's word. May we not only be hearers of the word, but may we live according to God's word on a daily basis. God's word is His standard of truth and should be that which we base our lives and decisions on. It is the lens through which we view the world.