Find number abc

The temporary Sunday School teacher was struggling to open a combination lock on the supply cabinet. She had been told the combination, but couldn't quite remember it. She went to the pastor's study and asked for help. The pastor came into the room and began to turn the dial. After the first two numbers he paused and stared blankly for a moment.Finally he looked serenely heavenward and his lips moved silently. Then he looked back at the lock, and quickly turned to the final number, and opened the lock. The teacher was amazed. "I'm in awe at your faith, pastor," she said. "It's really nothing," he answered. "The number is on a piece of tape on the ceiling."