Zohar and Nefesh HaChayim

Both texts address tefillah (prayer) and its essential nature, but with different emphases. Text 1 (Nefesh HaChaim) emphasizes that tefillah must be performed 'with all heart and all soul' (בכל לב ובכל נפש), focusing on the internal, emotional, and spiritual intensity required of the worshipper. Text 2 (Zohar) describes a mystical process involving physical movements (pesiyot), closing eyes, ascending spiritually, and hearing the cherubim's wings with whispered attachment (bilchishu itdabbkan), emphasizing the mystical ascent and sensory-spiritual communion. Both affirm tefillah's centrality, but Nefesh HaChaim stresses psychological-emotional kavanah while Zohar emphasizes mystical technique and divine communion. This is compatible rather than contradictory—different aspects of prayer's requirement.