"They seek Him with their whole heart. They do not seek themselves and their own things, but God only; this is that which they aim at...He is, and will be, the rewarder, the reward, of all those who thus seek Him diligently, seek Him with the heart, for that is it that God looks at and requires; and with the whole heart, for if the heart be divided between Him and the world, it is faulty." (Matthew Henry)