At Saint Patrick parish, people packed the church to hear Cardinal Daniel Dinardo's message. Galveston Mayor Lyda Ann Thomas and some service workers from other states were in attendance.
Cardinal Dinardo says he wasn't sure what to expect, but was happy to see such a large crowd at mass.
"People of faith are working simultaneously with everyone else but a church like this reopening -- gives a sense of hope to people," said Cardinal Daniel Dinardo.
The church, which is a Texas historical landmark, was not seriously damaged by the storm.