A Professor of the New Testament Robert M. Grant says "Luke evidently regarded himself as a historian, but many questions can be raised in regard to the reliability of his history His ‘statistics’ are impossible; Peter could not have addressed three thousand hearers without a microphone, and since the population of Jerusalem was about 25–30,000, Christians cannot have numbered five thousand ."
Profesorul de Noul Testament Robert M. Grant spune: „Luca se auto-considera drept istoric, dar sunt multe obiecții care pot fi ridicate împotriva credibilității istorisirilor sale ‘Statisticile’ lui sunt imposibile; Petru nu s-ar fi putut adresa la trei mii de oameni fără a avea microfon, iar deoarece populația Ierusalimului era în jur de 25-30 000, creștinii nu puteau număra cinci mii.”