Amos 4:4. Come to Beth-el, and transgress 

The words are ironical. Amos bids the people to come to Beth-el, the principal and most splendid centre of their worship, and transgress, to Gilgal, another representative centre, and multiply transgression: their religious services, partly on account of the moral unfitness of the worshippers (Amos 2:6-9),