A verb that comes with two subjects will sometimes come in singular and sometimes in plural. ויצא נח ובניו ואשתו (And Noah went forth, and his sons, and his wife)³⁸⁴. ויבוא משה ואהרן (And Moses and Aaron went)³⁸⁵. ויקברו אותו יצחק וישמעאל בניו (And Isaac and Ishmael his sons buried him)³⁸⁶. ויקחו שמעון ולוי איש חרבו (that two of the sons of Jacob, Simeon and Levi, Dinah's brethren, took each man his sword)³⁸⁷.

footnotes: ³⁸⁴ Genesis 8:18. ³⁸⁵ Leviticus 9:23. ³⁸⁶ Genesis 25:9. ³⁸⁷ Genesis 34:25.

And there is in this a rule that any place where two subjects are equal in rank and in the action – the verb will come in plural. And any place where one of the subjects is primary in rank or is first or is the primary in the action – the verb will come in singular.

Consider the Torah passages mentioned above:

Genesis 8:18 –ויצא נח ובניו ואשתו ונשי בניו אתו(And Noah went forth, and his sons, and his wife, and his sons' wives with him).

Leviticus 9:23 –ויבא משה ואהרן אל אהל מועד ויצאו ויברכו את העם וירא כבוד יהוה אל כל העם(And Moses and Aaron went into the tent of meeting, and came out, and blessed the people; and the glory of the LORD appeared to all the people).

Genesis 25:9 –ויקברו אתו יצחק וישמעאל בניו אל מערת המכפלה אל שדה עפרן בן צחר החתי אשר על פני ממרא(And Isaac and Ishmael his sons buried him in the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, which is before Mamre).

Genesis 34:25 –ויהי ביום השלישי בהיותם כאבים ויקחו שני בני יעקב שמעון ולוי אחי דינה איש חרבו ויבאו על העיר בטח ויהרגו כל זכר(And it came to pass on the third day, when they were in pain, that two of the sons of Jacob, Simeon and Levi, Dinah's brethren, took each man his sword, and came upon the city unaware, and slew all the males).

In the first two passages mentioned, the verbs are in singular, indicating that the subject that is first mentioned is primary. And in the last two passages mentioned, the verbs are in plural, indicating that the subjects are all equal in the context of the passages.