'Brother's' in the Bible

Thou shalt not see thy brother's ox or his sheep go astray, and hide thyself from them: thou shalt in any case bring them back unto thy brother.

Thou shalt not see thy brother's ass or his ox fall by the way, and hide thyself from them: thou shalt in any case help him to lift them up.

But if the man like not to take his brother's wife, his brother's wife shall go up to the gate unto the elders, and say, My husband's brother refuseth to raise up unto his brother a name in Israel: he will not perform for me the duty of a husband's brother.

then shall his brother's wife come near to him before the eyes of the elders, and draw his sandal from his foot, and spit in his face, and shall answer and say, So shall it be done unto the man that will not build up his brother's house.