Leviticus 23:14
You must not eat any bread, or roasted or new grain, until the very day you bring this offering to your God. This is to be a lasting ordinance for the generations to come, wherever you live. The prohibition on eating from the new harvest before the firstfruits wave offering is the temporal expression of the firstfruits principle: the community cannot enjoy what it has not yet presented to God. The lasting ordinance designation and the wherever you live formula make the firstfruits principle permanent and universal. Every harvest in every generation begins with the acknowledgment that the harvest belongs first to God.