He donated most of the metal roofing sheets for the mud-brick building, which was a considerable gift, likely close to half the expense of the construction project.
Yohana alikuwa mfadhili mkubwa wa ujenzi wa kanisa pamoja na kuongoza utekelezaji wa ujenzi. Alitoa mabati nyingi ya kuezekea jengo la matofali ya tope.