'Walk' in the Bible

and especially those who indulge in the corrupt passions of the sin nature, and despise authority.Presumptuous and reckless, self-willed and arrogant [creatures, despising the majesty of the Lord], they do not tremble when they revile angelic majesties,

First of all, know [without any doubt] that mockers will come in the last days with their mocking, following after their own human desires