What was a knight's most important job?

When a knight was not fighting, they ran business as usual in their lands. This could be any form of income to keep their estate wealthy, their servants paid, and pay their dues to the king. In England, this often consisted of raising sheep for wool, which could then be made into textiles. Knights and other nobility had enough land for sheep grazing. Others might do farming, have orchards, or simply collect a lot of taxes from peasants in their jurisdiction.