“Chreiai are practiced by restatement, grammatical inflection, comment and inversion, and we expand and compress the chreia … Practice by restatement is self-evident, for we try to express the assigned chreia, as best we can, with the same words or with other words in the clearest way.” I find that definition really helpful, because that seems to reflect what the Gospel writers did with the sayings of Jesus. We will find a saying of Jesus in the Gospel of Mark, and Matthew and Luke will pick it up,