'Abstain from' 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?”

the son of man does not abstain from eating and drinking, and they cry there's a glutton, and a sot, a friend of publicans and sinners: "but wisdom is justified by her children."

Then Jesus said to them, Beware and abstain from the leaven of the Pharisees and of the Sadducees.