Retune your heart to what God thinks and wants with these studies in the Psalms. How often do you get the tune of a mindless song stuck in your head? It's one way that Christians can end up thinking and wanting things just like the world around us. So God has given us a collection of songs that can help us retune our hearts to what he thinks and wants instead. You may feel as if your soul is downcast or sick -- troubled by worry, sin,...