In the Old Testament, the nation of Israel had the archangel (Michael) assigned to it (Daniel 10:21; 12:1), but Scripture nowhere states that an angel is “assigned” to an individual (angels were sometimes sent to individuals, but there is no mention of permanent assignment).
Katika Agano la Kale, taifa la Israeli lilikuwa malaika mkuu (Mikaeli) kwa ajili ya hilo (Danieli 10:21; 12:1), lakini hamna mahali maandiko inasema kwamba malaika ametengwa "kwa ajili ya" mtu binafsi (Malaika wakati mwingine walimtumwa kwa watu, lakini haitaji kazi ya kudumu).