Where does “sabbat” come from?

sabbat (Middle English) comes from Old English Sabat, from Latin Sabbatum, from Ancient Greek σάββατον, from Aramaic שַׁבְּתָא, from Hebrew שַׁבָּת, from Akkadian šapattum — 15.

Ancestry of “sabbat”, step by step

Step	Language	Word	Meaning
1	Old English	Sabat	the Sabbath
2	Latin	Sabbatum	Sabbath (the Jewish day of rest, i.e., the biblical seventh day of the week)
3	Ancient Greek	σάββατον	Sabbath
4	Aramaic	שַׁבְּתָא	sabbath
5	Hebrew	שַׁבָּת	Sabbath, Shabbat; weekly day of rest; sabbath
6	Akkadian	šapattum	15

Every word from Akkadian šapattum →Every word from Hebrew שַׁבָּת →Every word from Aramaic שַׁבְּתָא →