Albert Barnes Commentary Joshua 24:25

"So Joshua made a covenant with the people that day, and set them a statute and an ordinance in Shechem." — Joshua 24:25 (ASV)

Made a covenant with the people - that is, he solemnly ratified and renewed the covenant of Sinai, as Moses had done before him (Deuteronomy 29:1). As no new or different covenant was made, no sacrifices were necessary.