ha is a demonstrative particle that draws attention to the speaker's sight of four men in the fire.

As a demonstrative particle, ha marks an attention-directing exclamation in Daniel 3:25, where the speaker announces what he sees in the fire.

1. Demonstrative attention-directing particle · dominant

   In Daniel 3:25, the form is tagged as a demonstrative particle and introduces the speaker's report of seeing four men unbound and walking in the midst of the fire. The APB renders the verse's opening exclamation "Behold," before the report.

   Daniel 3:25

In the Anselm Project Bible: In Daniel 3:25, the APB presents the verse's attention-directing opening as "Behold,".