If any occupation or association is found to hinder our communion with God or our enjoyment of spiritual things, then it must be abandoned.  Beware of 'leprosy' in the garment. (Lev. 13:47)  Anything in my habits or ways which mars happy fellowshp with the brethren or robs me of power in service, is to be unsparingly judged and made an end of— 'burned.'  (Lev.13:52)  Whatever I cannot do for God's glory must be avoided.

—Arthur W. Pink