'Custom' in the Bible

Then the firstborn said to the younger, “Our father is old, and there is no man in the land to sleep with us as is the custom of all the land.

Laban answered, “It is not the custom in this place to give the younger daughter in marriage before the firstborn.

And she said to her father, Let it not displease my lord that I cannot rise up before thee; for the custom of women is upon me. And he searched, but found not the images.

yet, within three days doth Pharaoh lift up thy head, and hath put thee back on thy station, and thou hast given the cup of Pharaoh into his hand, according to the former custom when thou wast his butler.

So the servants served Joseph by himself [in honor of his rank], and his brothers by themselves, and the Egyptians who ate with him by themselves, because [according to custom] the Egyptians could not eat food with the Hebrews, for that is loathsome to the Egyptians.

When they came to the threshing floor of Atad, which is beyond the Jordan, they mourned there with a great lamentation (expressions of mourning for the deceased) and [extreme demonstrations of] sorrow [according to Egyptian custom]; and Joseph observed a seven-day mourning for his father.