Many in this world have undergone sacrifices; sufferings and pains have been inflicted on them, but it was only to put their virtue of the word to the test, for every virtue has to prove itself by going through a testing fire. When it has proved itself in its trial it becomes a solid virtue. This can be practiced in every little thing one does in one's daily life. A person who says one moment one thing and another moment another thing, even his own heart begins to disbelieve him.