Numbers 5:9 states every holy contribution brought to the priest becomes his — directly supports the principle of priestly due in Deuteronomy 18:3.

Numbers 18:11 gives wave offerings as a perpetual due to priests — parallels the general priestly share from sacrifices here.

Numbers 18:20 explains priests have no land inheritance, making the sacrificial portions in Deuteronomy 18:3 their sustenance.

Exodus 29:27 gives the breast and thigh from the ordination ram to priests — another instance of priestly portions, though for a specific ceremony.

Exodus 29:28 designates the breast and thigh as a perpetual due from peace offerings — parallel to the general priestly share in Deuteronomy 18:3.

Leviticus 7:30-34 lists the breast and right thigh as priest's share from peace offerings — different parts than shoulder/cheeks/stomach but same concept of priestly dues.

Leviticus 7:32 specifies the right thigh as the priest's contribution from peace offerings — similar to but different from the shoulder/cheeks/stomach described here.

Leviticus 7:34 confirms the breast and thigh as a perpetual priestly due from peace offerings — same genre of law but different specific parts.