The Rabbi Manis Friedman Children's Book Series This engaging book teaches children the importance of each and every person and how precious their mitzvos are to Hashem. Written by the veteran writer Sara Blau, beautifully illustrated and geared towards children ages 6-9, “Who Needs You” conveys, in a kid-friendly way, the timeless message that we are here to fulfill G-d’s needs. In the book, a conversation between a zayde and his grandchildren brings out the author’s message. “After all, this whole thing is His doing, so it must be for Him,” the book tells us.