How Does Grace Come?

We receive millions of graces, called actual graces. Everyone receives them, not only Christians. Every Muslim, every Buddhist, every communist in the world receives actual grace.  But to be united with God we need what is called habitual grace, a more permanent grace, that which creates in us a likeness that remains. How is this grace communicated to us? How does it get into the soul? Perhaps you have seen signs on roadways. They are often painted on rocks and read, 'Jesus saves.' Yes, indeed he does. But the very practical question is how? We have a span of more than twenty centuries between the life of our Lord and our days. Yes, he is God.  But how does he pour and infuse his divine life and power into our souls? He does it by means of the sacraments.