It is not saving faith to confess Christ as true. Saving faith receives Christ as a Treasure.
John PiperJesus' teaching in general [implies] that happy and fulfilling sexual relations in marriage depend on each partner aiming to give satisfaction to the other. If it is the joy of each to make the other happy, a hundred problems will be solved before they happen.
John PiperMaintaining joy in God takes 'work'; that is, it's a fight against every impulse for alien joys and every obstacle in the way to seeing and savoring Christ.
John Piper