In devotional service there is no sense gratification, but only transcendental loving service to the Lord. Consequently, the so-called priests engaged in sense gratification do not very much like devotional service. The brahmanas, the priests, have been against this Krsna consciousness movement since it began with Lord Caitanya Mahaprabhu. When Caitanya Mahaprabhu started this movement, the priestly class lodged complaints to the Kazi, the magistrate of the Muhammadan government. Caitanya Mahaprabhu had to lead a civil disobedience movement against the propaganda of the so-called followers of Vedic principles. These people are described as karma jada-smartas, which indicates that they are priests engaged in ritualistic ceremonies. It is here stated that such people become bewildered (rsayo ‘pi hi muhyanti). To save oneself from the hands of these karma jada-smartas, one should strictly follow the instructions of the Supreme Personality of Godhead.

Srila Prabhupada, SB 4.29.57, purport