"Near the close of the wilderness wandering the conditions of the covenant had been repeated. At Baalpeor, on the very borders of the Promised Land, where many fell a prey to subtle temptation, those who remained faithful renewed their vows of allegiance. Through Moses they were warned against the temptations that would assail them in the future; and they were earnestly exhorted to remain separate from the surrounding nations and to worship God alone. PK 293.2"
"And Israel joined himself unto Baal–peor: and the anger of the Lord was kindled against Israel."
The EGW passage directly references the events at Baalpeor described in Numbers 25, where Israel's unfaithfulness led to God's anger. The passage amplifies the biblical account by highlighting the renewal of vows by the faithful and the warnings against future temptations. The connection is more than a thematic parallel; it's a direct reference to a specific event and its implications.
"These are the words of the covenant, which the Lord commanded Moses to make with the children of Israel in the land of Moab, beside the covenant which he made with them in Horeb."
EGW refers to the renewal of the covenant in Deuteronomy 29:1 and the events at Baalpeor, which is a thematic parallel.