They spoke Hebrew (עברית)
It depends at what point, but mainly Hebrew and Aramaic.
Hebrews speak the Hebrew language.
The language is called Hebrew. The people can be called Jews, or Hebrews, or Israelites, or Israelis.
No. The Ancient Hebrews spoke Hebrew.
Surprisingly enough, the language of the Ancient Israelites (sometimes called Ancient Hebrews) was Ancient Hebrew.
No, unless they learned Hebrew in a university. German (in all forms) and Hebrew (in all forms) are 2 distinct languages.
It was the Latin language
greek
No, the ancient Greeks did not speak Latin. Latin was the language of the Romans, while the ancient Greeks spoke Greek.
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Yes, the Ancient Hebrews traded gold.
In the Language of the ancient hebrews the way to say weapon is (שֶׁלַח) Shelach. Shelach means weapon, sword or missile (arrow).