Dragons are in the Bible and therefore dragons are not mythological creatures, according to one author.

"The Bible speaks about dragons," Darek Isaacs, author of the book Dragons or Dinosaurs, said on the program Creation Today earlier this year. "Our authority -- everything we do we have to measure by the word of God, that is what I believe. So, we have to go to the Bible, and the Bible speaks about dragons."

He remarked that both the Old and New Testaments compared Satan and other evil creatures to dragons.

Isaacs' book argues that various ancient myths about dragons were actually based on human's experiences with dinosaurs. As a young Earth creationist, Isaacs believes humans and dinosaurs coexisted, since both came into existence at the same time about 6,000 years ago.

"If dragons in fact were entirely mythological, if they were a figment of the imagination, and if they never ever did exist, then God just compared our adversary to a make-believe creature that never existed," he said.

Watch video, uploaded to YouTube by Creation Today, below: