How did Bernard of Clairvaux contribute to the growth of the Cistercian order across Europe?

St. Bernard of Clairvaux was instrumental in the rapid expansion of the Cistercian order during the 12th century. After joining the order as a novice in 1112 or 1113, he was appointed in 1115 to lead a group of monks to establish the abbey of Clairvaux.1

Following this appointment, the growth of the order became spectacular, as no other religious body expanded as significantly in such a brief period. By the time of St. Bernard’s death, the total number of Cistercian abbeys had reached 338, with 68 of those being direct foundations from Clairvaux. Through his leadership and influence, the order spread extensively across Europe, reaching from Sweden to Portugal and from Scotland to the eastern Mediterranean. His efforts transformed the Cistercians from a relatively small family into a widespread and highly influential monastic force.1