Note 3 — Chapter I · SOURCES OF EVIDENCE.
Reading edition
A.D. 138 or 139 is the date most usually assigned to this most important work, although some place it as late as A.D. 150. If his statement in it that “Christ was born 150 years ago” were to be taken strictly, it would make its date A.D. 146 or A.D. 144, according as we allow four or six years as the error for the beginning of the true Christian era; but he may have used the number in a general way. His martyrdom is variously stated at A.D. 165 and A.D. 167.