Joshua 8:30
Then Joshua built an altar unto the Lord God of Israel in mount Ebal,
Cross-references
Joshua 8:33 continues the same event: the people gather at Mount Ebal for the covenant ceremony following the altar building.
Deuteronomy 11:29 commands the blessing and curse ceremony on Mount Ebal—the very site where Joshua builds this altar.
Deuteronomy 27:4 commands building an altar on Mount Ebal; Joshua 8:30 records the fulfillment of that command.
Deuteronomy 27:5 specifies uncut stones for the altar; Joshua 8:30-31 shows obedience to that instruction.
Genesis 12:7 records Abram building an altar after God's promise of the land—a precursor to Joshua's altar in that land.
Genesis 12:8 places Abram's altar between Bethel and Ai—the same region where Joshua builds his altar after conquering Ai.
Deuteronomy 11:30 provides the geographical location of Mount Ebal, clarifying where Joshua's altar was built.