"In the progress of a life of sanctification, the things we leave behind are the things of sin, the lust of the flesh, the lust of the eyes, the pride of life, the besetting sins, the peculiar sins of our personal character, our weaknesses and passions, the things of the world, its pleasures and its treasures. They are within us. They are about us. They appeal to us. They are before our mind’s eye. They will not be forgotten. But as we press on and on, as we reach forward in the effort to reach the goal, in singleness of heart and effort, they fail to allure us, they lose their attraction, they are forgotten, they leave us cold.
Forgetting those things that, in the progress toward the final goal, are behind. And always caring for new things, the new things, the things that are before. I press on and on, reaching forth in singleness of heart. Until the goal is reached and the prize is obtained. The crown of life!". ~Communion With God, by Herman Hoeksema, pg. 52. His explanation of Phil. 3:13-14