Deuteronomy 30:17
But if thine heart turn away, so that thou wilt not hear, but shalt be drawn away, and worship other gods, and serve them;
Cross-reference
Deuteronomy 17:17 specifically warns kings not to multiply wives lest their heart turn away, applying the same principle to royal behavior.
Deuteronomy 29:18-28 expands the same covenant curse for turning away to serve other gods, detailing bitter root and utter destruction.
Deuteronomy 11:16 repeats the identical warning against heart deception and serving other gods — a direct parallel within Deuteronomy.
Deuteronomy 11:17 describes the consequence — withheld rain and perish — as the punishment for the turning away warned about here.
Hebrews 12:25 warns not to refuse God who speaks, as those who refused on earth did not escape — analogous to the warning to not turn away.
Hebrews 3:12 warns against an evil heart of unbelief leading to falling away from the living God — a New Testament application of the same danger.
Proverbs 1:32 states that the simple are killed by their turning away, mirroring the deadly consequence of turning from God.
1 Kings 11:2 records the warning about intermarriage turning away hearts to other gods — exactly what happened to Solomon, fulfilling Deut 30:17.
1 Samuel 12:25 warns that doing wickedly leads to being swept away — the same consequence as turning away in Deuteronomy.
2 Kings 22:16 announces disaster on Judah because they violated the covenant — directly fulfilling the curses from this warning.
2 Chronicles 34:21 confesses great wrath because their fathers did not obey the book — reflecting the same covenantal curse.
Jeremiah 11:8 states they did not obey and God brought the covenant curses — a direct reference to the book including this warning.
Jeremiah 16:13 pronounces exile and serving other gods as judgment — mirroring the cause and effect in this warning.
Daniel 9:11 laments that Israel turned aside and the curse of the Law came — directly echoing the turning away warned in Deuteronomy.
Malachi 2:2 warns of curse for not listening or giving glory — the same conditional threat as the turning away in Deuteronomy.
Ezra 9:7 confesses the exile as a result of iniquities, echoing the consequence of turning from God warned here.
Proverbs 14:14 says the backsliding in heart is filled with the fruit of his ways — a parallel to the self-destructive path of turning away.
Numbers 32:15 uses the same 'turn away' warning about abandoning God, leading to wilderness abandonment — a parallel consequence.