'Act' in the Bible

You may not take as wife a woman and her daughter, or her son's daughter or her daughter's daughter, for they are of one family: it is an act of shame.

And you may not have sex relations with a beast, making yourself unclean with it; and a woman may not give herself to a beast: it is an unnatural act.

Do not take anyone's property or be false in act or word to another.

And if a man takes as wife a woman and her mother, it is an act of shame; let them be burned with fire, all three of them, so that there may be no shame among you.

And if a man takes his sister, daughter of his father or his mother, and has sex relations with her and she with him, it is an act of shame: they are to be cut off before the children of their people; he has had sex relations with his sister, and his sin will be on him.

And if a man takes his brother's wife, it is an unclean act; he has put shame on his brother; they will have no children.