Leviticus 10:10 instructs priests to distinguish holy from common, the very law Haggai commands them to inquire about.

Leviticus 10:11 commands priests to teach God's statutes, which is exactly what Haggai directs the priests to do regarding the law.

In Deuteronomy 33:10, the priestly role includes teaching the law, which is exactly what Haggai commands to seek.

Ezekiel 44:23 describes priests teaching the difference between holy and common—directly relevant to the purity inquiry in Haggai.

Malachi 2:7 states that people should seek instruction from the priest's lips—the very principle behind Haggai's command.

Deuteronomy 17:9 commands consulting the Levitical priests for a decision—the same 'ask the priests' pattern as in Haggai.

Ezekiel 22:26 condemns priests for failing to teach the difference between clean and unclean—a stark contrast to the ideal in Haggai.

Deuteronomy 17:8 introduces the practice of bringing difficult cases to the priests for decision—a precedent for consulting them.

Zechariah 7:3 records people asking priests about fasting practices—another example of seeking priestly guidance on religious matters.