Hugh Martin from an article by this name, speaking of God’s enabling and a person’s willingness:
There is no interval of time between them. Their nature is such as to preclude this. If at any moment God is working in you, then at that very moment you are willing and doing. Your present godly will or work is not the result of God’s past, but of God’s present working in you. And God’s present working in you is not the cause of any future godly will and deed, unless God shall work in you then as well as now. Your work and his are simultaneous. Neither of them is first in point of time.
Good stuff. Especially the reminder to not rest on past grace thinking it is sufficient for today.