The Midrash says on The Weekly Haftaros 1 - Bereishis

This series is an original and unique attempt at familiarizing the English-speaking Jewish public with the meaning of the Haftoros. The verses from the prophets are not literally translated. Rather, they were adapted according to the rendition of the classical commentators, so as to be meaningful to the reader. Midrashim and stories serve to highlight the ideas expressed in the verses. The text is perfectly lucid even for those not familiar with Hebrew. This series is especially valuable for Bar-Mitzvah boys. With the aid of these volumes, each Bar-Mitzvah boy will be able to grasp the meaning of "his" Haftara!