זוהר שמות — דף סו ע”ב

Parashah Beshalah. Amalek brought other peoples with him, but all feared to approach Israel except him. Joshua weakened Amalek through a mystical secret: bringing upon Amalek a weakness from a place of weakness. Moses s hands symbolized the upper connection: when heavy the connection weakened, when raised the higher force connected and Israel prevailed. Israel s shield comes from the Holy One, and the other side is repelled; Amalek fought Israel from a place of lack of faith.