'Brother' in the Bible

And Yahweh said to Moses, "Tell your brother Aaron [that] he should not enter at any time into the sanctuary {behind} the curtain {in front of} the atonement cover that [is] on the ark, so that he might not die, because I appear in the cloud over the atonement cover.

You must not expose the nakedness of your father's brother; you must not {have sex with} his wife--she [is] your aunt.

" 'You shall not hate your brother in your heart; you shall surely rebuke your fellow citizen, so that you do not incur sin {along with} him.

except for his direct relative closest to him: his mother and his father, and his son and his daughter, and his brother,

" 'When your brother becomes poor and he sells part of his property, then {his nearest redeemer} shall come, and he shall redeem the thing sold by his brother.