'Love the Lord Your God' in the Bible

If thou shalt hearken therefore unto my commandments which I command you this day, that ye love the LORD your God and serve him with all your hearts and with all your souls;

For if ye shall keep all these commandments which I command you, so that ye do them and love the LORD your God and walk in all his ways and cleave unto him;

hearken not unto the words of that prophet or dreamer of dreams. For the LORD thy God tempteth you, to wete whether ye love the LORD your God with all your hearts and with all your souls.