'Fields' in the Bible

Now it happened that on a Sabbath he went through the grain fields, and his disciples were picking and eating the heads of grain, rubbing [them] in [their] hands.

And he went [and] hired himself out to one of the citizens of that country, and he sent him into his fields to tend pigs.

Then those in Judea must flee to the mountains, and those {inside it} must depart, and those in the fields must not enter into it,