Deuteronomy 12:4
Ye shall not do so unto the Lord your God.
Cross-reference
Deuteronomy 12:30 elaborates on this command — warns against even inquiring about how the nations worship, to avoid imitating them.
Deuteronomy 12:31 gives the reason for this prohibition — the nations' detestable practices, including child sacrifice.
Deuteronomy 16:21 applies this principle — forbidding Asherah poles near God's altar, a specific pagan practice.
Deuteronomy 16:22 also applies the principle — forbidding sacred pillars, another pagan practice.
Deuteronomy 20:18 echoes the same concern — that the nations' practices would teach Israel to sin, reinforcing this command.
Leviticus 20:23 gives a parallel command — not to follow the customs of the nations God drives out, for the same reason.
Leviticus 18:3 similarly forbids imitating the practices of Egypt and Canaan, a direct parallel to this command.
1 Kings 14:15 shows the judgment for making Asherim, the very idolatry this command forbids.
2 Kings 17:12 cites this command as the reason for judgment: they served idols despite God's prohibition.
Psalm 78:58 recounts how Israel's high places provoked God, echoing the forbidden worship here.