observe the feast # 05_DEU_16_13 # Thou shalt observe the feast of tabernacles seven days, after that thou hast gathered in thy corn and thy wine: 
observe the feast # 02_EXO_12_17 # And ye shall observe [the feast of] unleavened bread; for in this selfsame day have I brought your armies out of the land of Egypt: therefore shall ye observe this day in your generations by an ordinance for ever. 
observe the feast # 02_EXO_34_22 # And thou shalt observe the feast of weeks, of the firstfruits of wheat harvest, and the feast of ingathering at the year's end.