Zerah or Zérach (זֶרַח / זָרַח "Sunrise", Standard HebrewZéraḥ / Záraḥ, Tiberian HebrewZéraḥ / Zāraḥ) (1.) An "Ethiopian," probably Osorkon II., the successor of Shishak on the throne of Egypt. With an enormous army, the largest we read of in Scripture, he invaded the kingdom of Judah in the days of Asa (2 Chr. 14:9-15). He reached Zephathah, and there encountered the army of Asa. This is the only instance "in all the annals of Judah of a victorious encounter in the field with a first-class heathen power in full force." The Egyptian host was utterly routed, and the Hebrews gathered "exceeding much spoil." Three hundred years elapsed before another Egyptian army, that of Necho (B.C. 609), came up against Jerusalem.
(2.) A son of Tamar (Gen. 38:30); called also Zara (Matt. 1:3). Zerah was the twin of Perez (Perets); when Zerah stuck his hand out, the midwife tied a bright red string around it, then Perez came out fully, and then Zerah, who was named for the brightness of the string.
Zarah Leander (March 15, 1907 – June 23, 1981) was a Swedish actress and singer.
She was born as Zarah Stina Hedberg in Karlstad, and died in Stockholm.
Although Zarah Leander studied piano and violin already as a small child, and sang on stage for the first time at the age of six, she made a serious attempt at an ordinary life.
This means a regulation of the interaction between Jews and idolaters (who represented most of the Gentile population during the time of the Talmud) in terms of both distancing the Jew from the act of idolatry in every shape as well as distancing a Jew from the threat of assimilation and cultural influence.
This Gemara on Avodah Zarah was the main target of controversy and criticism.
In terms of the actual length of the Gemara, Avodah Zarah is fairly close to the middle, being an "average" length tractate.