Robert M. Grant has noted that although Luke saw himself within the historical tradition, his work contains a number of statistical improbabilities, such as the sizable crowd addressed by Peter in Acts 4:4. He has also noted chronological difficulties whereby Luke "has Gamaliel refer to Theudas and Judas in the wrong order, and Theudas actually rebelled about a decade after Gamaliel spoke (5:36–7)".[1]