if only thou diligently hearken unto the voice of the LORD thy God, to observe to do all this commandment which I command thee this day.
King James Version (KJV) - Deuteronomy 15:5 >Only if thou carefully hearken unto the voice of the LORD thy God, to observe to do all these commandments which I command thee this day.
Berean Study Bible (BSB) - Deuteronomy 15:5 >if only you obey the LORD your God and are careful to follow all these commandments I am giving you today.