By mentioning them...

By mentioning them, Allah in effect says that when they say something they surely proceed to do it, and do not withdraw from it even if they have to face difficulties. The second stage of introduction is contained in the phrase, “these are they who are true”. Truth is a comprehensive virtue, encompassing all attributes of knowledge and action.

Truth is an inseparable concomitant of all basic virtues - continence, bravery, wisdom and justice - and of their branches., Man's life is made up of his belief, words and actions. When he is true, all the three aspects conform with each other. He does not do except what he says, and does not…