Basically, it refers to our free will. God blessed us each with freedom, and He respects and preserves that gift of freedom which He gave us. He protects it even at the tremendous cost of His Son’s life. As He protects the life He has given us, He also protects the freedom which He has also given us. Freedom even to reject Him and the One He sent. Yet, He will never force someone to love him, as He desires very strongly that our love is a conscious and completely voluntary love. A compelled love is neither free nor pure, and there is nothing impure associated with God. Thus, He grants even those whom He knows will remain true to Him the freedom to reject Him.