If you have other gods before the Lord, your heart will be turned away from serving the only true and living God, who requires the whole heart, the undivided affections. All the heart, all the soul, all the mind, and all the strength, does God require. He will accept of nothing short of this.
Ellen G. WhiteIf physical exercise were combined with mental exertion, the blood would be quickened in its circulation, the action of the heart would be more perfect, impure matter would be thrown off, and new life and vigor would be experienced in every part of the body.
Ellen G. WhiteAll true obedience comes from the heart. It was heart work with Christ. And if we consent, He will so identify Himself with our thoughts and aims, so blend our hearts and minds into conformity to His will, that when obeying Him we shall be but carrying out our own impulses. The will, refined and sanctified, will find its highest delight in doing His service. When we know God as it is our privilege to know Him, our life will be a life of continual obedience. Through an appreciation of the character of Christ, through communion with God, sin will become hateful to us.
Ellen G. White