How do you love God?

Since all our love for God is ultimately a response to His love for us, we can never love Him in the same way He loves us, namely, gratuitously. Since we are fundamentally dependent on God and in His debt for our creation and redemption, our love is always owed to Him, a duty, a response to His love. But we can love our neighbor in the same way that He loves us, gratuitously—not because of anything the neighbor has done for us or because of anything that we owe him, but simply because love has been freely given to us. We thereby greatly please the Father. God the Father tells Catherine [of Siena]: This is why I have put you among your neighbors: so that you can do for them what you cannot do for me—that is, love them without any concern for thanks and without looking for any profit for yourself. And whatever you do for them I will consider done for me."
– Ralph Martin, Fulfillment of Desire, p. 261