Numbers 18:12 gives firstfruits of grain, oil, and wine to priests, mirroring the first of the dough in Numbers 15:19.

Numbers 18:19 describes holy contributions as a perpetual covenant for priests, same category as the dough offering.

Joshua 5:11 describes the first eating of the land's produce, the exact situation for which Numbers 15:19 commands an offering.

Nehemiah 10:37 directly cites the 'first of our dough' as a commitment to obey the law in Numbers 15:19.

Ezekiel 44:30 repeats the command to give the first of your dough to the priests, promising a blessing on your house.

Joshua 5:12 notes the cessation of manna after eating the produce, showing the transition to land food requiring the offering.

Leviticus 23:17 commands two loaves as firstfruits for Pentecost, analogous to the first of the dough offering.