That would be the same Scripture that Jesus quoted at Satan when He was tempted in the wilderness,
the same Scripture that Jesus quoted at the Pharisees to condemn them and their traditions,
the same Scripture that Jesus used to validate Himself and His ministry,
the same Scripture that Catholics and the Catholic church take credit for, claiming that they gave it to the world,
the same Scripture that the CCC quotes from to validate itself.
Yes, it's Scripture, Scripture, Scripture.
Because God's word is forever settled in heaven and is TRUTH.