From the Christian Science Weekly Bible Lesson for the week ending Sunday, March 13th, 2016

Now faith is the substance of things hoped for, the evidence of things not seen. (Hebrews 11:1)

ES pues la fe la sustancia de las cosas que se esperan, la demostración de las cosas que no se ven. (Hebreos 11:1)

Through faith we tap into our spiritual sense, and spiritual substance which was once invisible becomes visible.