So you have a spiritual practice you can not prove by the word of God? Doesn't that give you any pause?
Not at all. My beliefs and practices are not limited to scripture. Surely you are familiar enough with Catholicism to understand that. Later this evening, I will gather my children, we will light candles and kneel before this big white ceramic statue of Mary and say the Hail Mary fifty three times, sometimes in latin, since we all know how Satan hates that language. I will be doing something that many a great Catholic saint has done, and following the advice of several popes, as well as the Blessed Virgin herself at Lourdes and Fatima. My church has deemed the rosary as high quality devotion, even setting aside a Sunday to celebrate it. That's good enough for me.