acts 13:20 And after that he gave unto them judges about the space of four hundred and fifty years, until Samuel the prophet. - Free Bible Online

      20. after that he gave . . . judges . . . about the space of four hundred and fifty years--As this appears to contradict 1Ki 6:1, various solutions have been proposed. Taking the words as they stand in the Greek, thus, "after that, by the space of four hundred fifty years, He gave judges," the meaning may be, that about four hundred fifty years elapsed from the time of the covenant with Abraham until the period of the judges; which is historically correct, the word "about" showing that chronological exactness was not aimed at. But taking the sense to be as in our version, that it was the period of the judges itself which lasted about four hundred fifty years, this statement also will appear historically correct, if we include in it the interval of subjection to foreign powers which occurred during the period of the judges, and understand it to describe the whole period from the settlement of the tribes in Canaan to the establishment of royalty. Thus, from the Exodus to the building of the temple were five hundred ninety-two years [JOSEPHUS, Antiquities, 8.3.1]; deduct forty years in the wilderness; twenty-five years of Joshua's rule [JOSEPHUS, Antiquities, 5.1.29]; forty years of Saul's reign (Ac 13:2); forty of David's and the first four years of Solomon's reign (1Ki 6:1), and there remain, just four hundred forty-three years; or, in round numbers, "about four hundred fifty years."

JFB.