ESV: And if you forget the Lord your God and go after other gods and serve them and worship them, I solemnly warn you today that you shall surely perish.
NIV: If you ever forget the Lord your God and follow other gods and worship and bow down to them, I testify against you today that you will surely be destroyed.
NASB: And it shall come about, if you ever forget the Lord your God and follow other gods and serve and worship them, I testify against you today that you will certainly perish.
CSB: If you ever forget the Lord your God and follow other gods to serve them and bow in worship to them, I testify against you today that you will perish.
NLT: But I assure you of this: If you ever forget the Lord your God and follow other gods, worshiping and bowing down to them, you will certainly be destroyed.
KJV: And it shall be, if thou do at all forget the Lord thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish.
NKJV: Then it shall be, if you by any means forget the Lord your God, and follow other gods, and serve them and worship them, I testify against you this day that you shall surely perish.