#to the Ishmaelites

"to these men who are descendants of Ishmael" (UDB)

#not lay our hands upon him

This means not to harm or injure him. AT: "not hurt him" (See: [[:en:ta:vol1:translate:figs_idiom]])

#he is our brother, our flesh

Here "flesh" is a metonymy that stands for a relative. These phrases mean basically the same thing. Judah emphasizes the family relationship between Joseph and the other brothers. AT: "he is our blood relative" or "he is our very own brother" (See: [[:en:ta:vol2:translate:figs_metonymy]] and [[:en:ta:vol2:translate:figs_doublet]]).

#His brothers listened to him

"Judah's brothers listened to him" or "Judah's brothers agreed with him"

#Midianite ... Ishmaelites

Both names refer to the same group of traders that Joseph's brothers meet.

#for twenty pieces of silver

"for the price of 20 pieces of silver" (See: [[:en:ta:vol2:translate:translate_numbers]])

#carried Joseph into Egypt

"took Joseph to Egypt" (UDB)