'With All Your Heart' in the Bible

Only be very careful to keep the commands and the Law that Moses the servant of the LORD commanded you that is, to love the LORD your God, to follow in all of his ways, to keep his commands, to stay close to him, and to serve him with all your heart and soul."

"Look here: today I'm going down the path that everyone on earth takes, and you know with all your hearts and souls that not a single word of all of the good things that the LORD your God spoke about you has failed to happen. Everything has been fulfilled about you not one of them has failed.