This video is from a message on Psalm 78. In it, Bob Kauflin talks about being found steadfast and faithful.
While it’s certainly possible to be steadfastly and faithfully wrong, the verse he is talking about is clear.
and that they should not be like their fathers,
a stubborn and rebellious generation,
a generation whose heart was not steadfast,
whose spirit was not faithful to God.
When the contrast is between stubborn/rebellious and steadfast/faithful to God, the point is hard to miss. May this be a day of faithfulness, which leads to a week, month, year, decade, and life of faithfulness to God.