If I forget you Exile – flag, folklore handicraft

Flag in the image of a tallit hanging on a wooden pole. Folk handicraft, paint on material, 1940s?
The caption “If I forget you Exile” is in red with “drops of blood” dripping and underneath in black a quotation fro book of Yehezkel - “And when I passed by you and saw you wallowing in your blood, I said to you, In your blood live...”
Sewn at the bottom are three blue bands and along the margins of the flag are fringes.
Maximal size 44x68 cm. Fair condition. Stains. Torn at the bottom. The caption in red is peeling and has partially been unprofessionally reinforced using adhesive tape.