NOBEL
Noble = Nobel = No Bell?
Patriots used lamps rather than bells because they didn't want to alert the hostile British that they were prepared that night. Finally as the British were nearing Lexington, the church bells began a rapid clanging that prompted a retreat.
From Wiki:
The ride of the three men triggered a flexible system of "alarm and muster" that had been carefully developed months before, in reaction to the colonists' impotent response to the Powder Alarm of September 1774. This system was an improved version of an old network of widespread notification and fast deployment of local militia forces in times of emergency. The colonists had periodically used this system all the way back to the early years of Indian wars in the colony, before it fell into disuse in the French and Indian War. In addition to other express riders delivering messages, bells, drums, alarm guns, bonfires, and a trumpet were used for rapid communication from town to town, notifying the rebels in dozens of eastern Massachusetts villages that they should muster their militias because the regulars in numbers greater than 500 were leaving Boston with possible hostile intentions. This system was so effective that people in towns 25 miles (40 km) from Boston were aware of the army's movements while they were still unloading boats in Cambridge.[56] Unlike in the Powder Alarm, the alarm raised by the three riders successfully allowed the militia to confront the British troops in Concord, and then harry them all the way back to Boston.[57]