pay dividends

hell to pay

Very unpleasant consequences; a great deal of trouble.

hit pay dirt

To strike it rich; to get lucky or have a big break.

pay a visit

To visit.

pay attention

To attend; to be attentive; to focus one's attention.

pay heed

To give attention; to heed.

pay homage to

to show honor or respect to; to honor; to do, make or pay obeisance to

pay off old scores

To settle old grudges by taking revenge.

pay one's debt to society

To serve time in prison or a similar correctional facility.