[strenholme]

I don’t see either Hebrew or Italian as constructed languages. Hebrew, as other posters has pointed out, has been a liturgical language (akin to Latin or Coptic) for a long time, and is a direct derivative of a natural language. Italian is also a natural language, derived from the Florentine dialect of the Tuscan language.

I see a constructed language as something created when someone sits down and deliberately makes a language, as did Zamenhof did when he sat down and made the Esperanto language. This has been a number of times; a partial list is at https://ial.fandom.com/wiki/Linguas

Natural languages occur when two or more people together realize they need to communicate, but do not have a common language to do it with. Nicaraguan Sign Language is a notable example of a language just appearing out of the blue in the last 50 years. Idioglossia languages also frequently pop up, seemingly out of the blue. Pidgin languages (where two or more groups of people who speak different languages need to speak to each other) also pop up pretty quickly when communication needs to be done (and if children are exposed to a pidgin language, it then transforms and becomes a creole language because children will fill out all the “gaps” in the language to make it a full bodied language).