The immediate task here is to understand the covenant instruction in its own setting before asking whether later Scripture develops the same theme. No later connection should be forced merely to make the section look fuller.

The key reading question is therefore not simply, “What rule or event appears here?” but, “What does this movement teach Israel about the LORD, covenant loyalty, life in the land, and the consequences of trusting or resisting His word?”

[Christological calibration — Possible Canonical Reflection] The firstfruits confession celebrates God’s saving history and the first produce of the land. Paul calls the risen Christ “the firstfruits of them that slept” (1 Corinthians 15:20). The harvest resonance is meaningful, but Paul does not cite Deuteronomy 26 as his source, so this is a thematic/canonical reflection rather than an explicit fulfillment claim.