“Nor need you doubt your conversion, your change of heart, because you cannot tell the day when it took place, as many profess to do. It did not take place in a day, or you might tell it. It is the growth of years (Mark 4:26–28), and therefore all the more reliable. You cannot tell when you learned to walk, talk, think, and work. You do not know when you learned to love your earthly father, much less the heavenly.” Heidelberg Catechism, Twentieth–Century Edition