Deuteronomy 15:5
if only you obey the LORD your God and are careful to follow all these commandments I am giving you today.
Berean Standard Bible
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.
if only you diligently listen to the LORD your God’s voice, to observe to do all this commandment which I command you today.