The Hebrew verb chagag means to hold a feast, to observe a sacred festival, to celebrate with festive assembly. It is the root behind chag (H2282), the common word for Israel's three great pilgrimage feasts (Passover/Unleavened Bread, Weeks, Tabernacles). The word carries connotations of joyful, communal celebration before the LORD.
Israel's feasts (chagim) were not optional spiritual extras — they were commanded covenant celebrations rehearsing the drama of redemption. Each feast proclaimed something about God's saving work: Passover (redemption from slavery), Firstfruits (resurrection), Pentecost (harvest/Spirit), Tabernacles (God dwelling with His people). The New Testament reveals Christ as the fulfillment of every festival. Christians gather weekly to celebrate the ultimate festival — the resurrection of Jesus — and await the final great feast: the marriage supper of the Lamb (Revelation 19:9).