ἑορτάζω G1858
heortázō · heh-or-tad'-zo · Verb
from ἑορτή; to observe a festival:--keep the feast.
1 Occurrence in the King James Bible
1 Corinthians 5:8Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth.