"This "square" variant of Aramaic developed into the Hebrew alphabet proper during the Second Temple period, in a process that was not complete before the 1st century CE
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https://en.wikipedia.org/wiki/History_of_the_Hebrew_alphabet

Aramaic (Jewish Babylonian Aramaic: ארמית, romanized: ˀərāmiṯ; Classical Syriac: ܐܪܡܐܝܬ, romanized: arāmāˀiṯ[a]) is a Northwest Semitic language that originated in the ancient region of Syria

https://en.wikipedia.org/wiki/Aramaic

Which language is closer to that of the Old Testament Israelites?