On Tuesday, August 7, 2018 Arnold David Horwitz of Potomac, MD. Beloved husband of Lori Horwitz. Devoted father of Lissa Levin (Mark), Devin Horwitz, and Marti Horwitz (Brett Meyers). Loving brother of Stephen Horwitz (Emily); grandfather of Brenner, Jansyn and Danya Levin, Yeshai Horwitz and Azure Meyers; son-in-law of Sunny Raport. Funeral services will be held Friday, August 10, 2018 at 9:30 a.m. at Washington Hebrew Congregation, 3935 Macomb St. NW, Washington, DC 20016. Interment to follow at King David National Memorial Park, 7482 Lee Highway, Falls Church, VA 22042. Family will be observing Shiva from Saturday evening at 6 p.m. with minyan service at 7 p.m., Sunday evening at 4 p.m. with minyan service at 7 p.m. and Monday evening at 6 p.m. with minyan service at 7 p.m. at the residence of Lori Horwitz. Memorial contributions may be made to a charity of your choice. Services entrusted to Sagel Bloomfield Danzansky Goldberg Funeral Care, Inc.