'Often' in the Bible

Then the disciples of John [the Baptist] came to Jesus, asking, “Why do we and the Pharisees often fast [as a religious exercise], but Your disciples do not fast?”

“O Jerusalem, Jerusalem, who murders the prophets and stones [to death] those [messengers] who are sent to her [by God]! How often I wanted to gather your children together [around Me], as a hen gathers her chicks under her wings, and you were unwilling.