'Curses' in the Bible

And the priest will put these curses in a book, washing out the writing with the bitter water;

And in the words which the Lord had given him he said, From Aram Balak has sent for me, the king of Moab from the mountains of the East: come, put curses on Jacob for me and be angry with Israel.

How may I put curses on him who is not cursed by God? how may I be angry with him with whom the Lord is not angry?

And Balak said to him, Come with me now into another place from which you will not be able to see them all, but only the outskirts of them; and you will send curses on them from there.