Since evil comes from the heart why does God want us to love Him with our heart?

Question:
If what comes from the heart is evil, why does God want us to love Him with all our hearts?

Answer:

Of course, when the heart is spoken of here, it is not the literal blood-pumping organ that is being referred to.  It is the spirit and soul of a person…his intellectual and emotional being.  The heart of the believer is capable of knowing, loving, and obeying God.  When we delight ourselves in the Lord, He gives us the desires of our hearts (Psalm 37:4).  Does the Lord ask the unsaved man to love him with all his heart?  No.  Without knowing the love and forgiveness of Christ, one cannot and does not love the Lord.  If an unsaved person prays, the Lord does not respond (Isaiah 59:1,2; John 9:31).  Man, without salvation, has no relationship with the Lord (1 Corinthians 2:14).