We must understand that where there is no feat to achieve, where there is no work to be done, where man is not trying to attain a height, or when God is not on a project through man, grace is not needed and it is not made available. Therefore grace complements the effort to achieve a task at hand.
Many Church member come with problems to the house of God, they sing songs and dance unto God but still go home with their troubles as if our God has changed or loves when we suffer.