Obedience is the Proof and the Exercise of the Love of God in our hearts.
It comes from Love and leads to Love.
It Assures us that we are Abiding in the Love of Christ.
It Seals our Claim to be Called Friends of Christ.
So it is not only a Proof of Love but of Faith, too.
It Assures us that we will Receive whatever we Request BECAUSE we Obey Him and do the things that Please Him.