'Devotion' in the Bible

These practices indeed have the appearance [that popularly passes as that] of wisdom in self-made religion and mock humility and severe treatment of the body (asceticism), but are of no value against sinful indulgence [because they do not honor God].

Servants, in everything obey those who are your masters on earth, not only with external service, as those who merely please people, but with sincerity of heart because of your fear of the Lord.