But only if you heed the voice of the Lord your God, and keep to all that he has ordered, that which I am entrusting to you this day, will he bless you, just as he has promised
Other versions
King James Version
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.English Standard Version
if only you will strictly obey the voice of the LORD your God, being careful to do all this commandment that I command you today.New International Version
if only you fully obey the LORD your God and are careful to follow all these commands I am giving you today.