Genesis 29:3

3and when all the flocks were gathered there, the shepherds would roll the stone from the mouth of the well and water the sheep, and put the stone back in its place over the mouth of the well.

Genesis 34:14

14They said to them, “We cannot do this thing, to give our sister to one who is uncircumcised, for athat would be a disgrace to us.

Genesis 43:32

32They served him by himself, and them by themselves, and the Egyptians who ate with him by themselves, because the Egyptians could not eat with the Hebrews, for that is ban abomination to the Egyptians.
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