I can flip a switch, but I don't provide the electricity. I can turn on a faucet, but I can't make the water flow. There will be no light and no liquid refreshment without someone else providing it. And so it is, in a limited sense, for the Christian with the ongoing grace of God. His grace is essential for our spiritual lives, but we don't control the supply. We can't make the grace flow, but God has given us circuits to connect and pipes to open in case it's there.
Our God is lavish in his grace, often liberally dispensing his favor without even the least bit of cooperation and preparation on our part. But he also has his regular channels. And we can routinely avail ourselves of these revealed paths of blessing, or neglect them to our detriment.
The Places Where the Grace Keeps Passing
"The essence of the Christian life," says one seasoned saint, "is learning to fight for joy in a way that does not replace grace." We cannot earn God's grace or make it flow apart from his free gift. But we can position ourselves to go on getting should he keep giving. We can "fight to walk in the paths where he has promised his blessings" (John Piper, When I Don't Desire God, 43–44). We can ready ourselves for receiving along his regular route sometimes called "the spiritual disciplines."
[Read the rest of the article at Desiring God.]