Exodus 9:2 New English Translation

²For if you refuse to release them^[a] and continue holding them,^[b]

Exodus 9:2 tn The object “them” is implied in the context.
Exodus 9:2 tn עוֹד (ʿod), an adverb meaning “yet, still,” can be inflected with suffixes and used as a predicator of existence, with the nuance “to still be, yet be” (T. O. Lambdin, Introduction to Biblical Hebrew, 171-72, §137). Then, it is joined here with the Hiphil participle מַחֲזִיק (makhaziq) to form the sentence “you are still holding them.”

New English Translation (NET)