Divine grace is God acting in our life to accomplish what we cannot do on our own. It informs our being and actions and makes them effective in the wisdom and power of God. Hence, grace is not opposed to effort (our actions) but to earning (our attitude).

Paul the apostle, who perhaps understood grace as none other, remarks on his own efforts for Christ: “By the grace of God I am what I am, and His grace toward me did not prove vain; but I labored even more than all of them, yet not I, but the grace of God with me” (1 Cor. 15:10). The supernatural outcome that accompanies grace-full action stands out. - Willard