KJV: And a curse, if ye will not obey the commandments of the LORD your God, but turn aside out of the way which I command you this day, to go after other gods, which ye have not known.
NASB: and the curse, if you do not listen to the commandments of the LORD your God, but turn aside from the way which I am commanding you today, by following other gods which you have not known.
KJV: Observe and hear all these words which I command thee, that it may go well with thee, and with thy children after thee for ever, when thou doest that which is good and right in the sight of the LORD thy God.
NASB: "Be careful to listen to all these words which I command you, so that it may be well with you and your sons after you forever, for you will be doing what is good and right in the sight of the LORD your God.
KJV: Thou shalt not hearken unto the words of that prophet, or that dreamer of dreams: for the LORD your God proveth you, to know whether ye love the LORD your God with all your heart and with all your soul.
NASB: you shall not listen to the words of that prophet or that dreamer of dreams; for the LORD your God is testing you to find out if you love the LORD your God with all your heart and with all your soul.
KJV: When thou shalt hearken to the voice of the LORD thy God, to keep all his commandments which I command thee this day, to do that which is right in the eyes of the LORD thy God.
NASB: if you will listen to the voice of the LORD your God, keeping all His commandments which I am commanding you today, and doing what is right in the sight of the LORD your God.