Deuteronomy 13:4

13:4 You must follow the Lord your God and revere only him; and you must observe his commandments, obey him, serve him, and remain loyal to him.

Deuteronomy 28:21

28:21 The Lord will plague you with deadly diseases ¹  until he has completely removed you from the land you are about to possess.

[28:21]  ¹ tn Heb “will cause pestilence to cling to you.”