Glosbe does translate ezman as “heaven” (******) or “sky” (*****) and it back-translates “heaven” as ezman.

 Some definitions from Merriam-Webster Unabridged:

 Heaven. 1. a. … especially, the expanse [of space] that seems to be over the earth like a great … dome — usually used in plural. 2. a. … the place … of the blessed dead.
 Earth. 1. a.  … soil, ground. 2. the sphere of mortal life comprising the world with its lands and seas as distinguished from spheres of spirit life — compare heaven, hell.
 Sky. 1. b. the expanse [of space] appearing as a great vault … over the earth. 2. heaven (def. 2) — often used in plural.
 Tremble. 1. to shake involuntarily (as with fear, cold, excitement, fatigue).

 These two expressions are good idiomatic English:
 “If his wrath is aroused, the skies will tremble [in fear].”
 “If his wrath is aroused, the heavens will tremble [in fear].”
 Here the singular “sky” and “heaven” would not be used in good spoken English, only in mediocre written English.

 So we have a choice of eight ‘very good’ literal translations:
 “YPG is [goes] walking, and the earth and [the] skies tremble.”
 “YPG is [goes] walking, and the earth and [the] heavens tremble.”

 If you try speaking them aloud, you may find that this one sounds best:
 A. “YPG goes walking, and the earth and heavens tremble.” Something about the meter (the cadence) just makes it sound liks a military motto.

 The present-progressive clause “YPG is walking” would naturally correlate with the present-progressive clause “the earth and skies are trembling.” But we want to use simple present tense in the second clause.  (See above.)

 To do so, a native English speaker would begin with “YPG goes walking …”, because it combines both tenses: simple present and present progressive.

 But see whether you can come up with a better-sounding combination!