This is a short film produced by Gibborim Studios. Less than half an hour long, but very powerful message. They took the little blurb about Shamgar in Judges 3:31 and turned it into a movie.
And a few centuries earlier Job was talking about the sea being frozen over.2 Samuel 23:20 Then Benaiah the son of Jehoiada, the son of a valiant man of Kabzeel, who had done great deeds, killed the two sons of Ariel of Moab. He also went down and killed a lion in the middle of a pit on a snowy day.
And artistic license for movie producers.Thank God for global warming!
You should read some of the extra books, Enoch, Jasher, Jubilees. They tell a story.Israel was very cold in those days.