Zohar and Nefesh HaChayim

Both texts affirm kavanah (intention/directedness of heart) as essential to tefillah. Text 1 emphasizes kavanah as cognitive attachment (התקשרות המחשבה) that enables divine speech through the worshipper, stressing preparatory intention before prayer and the surrendering of one's own speech. Text 2 emphasizes kavanah as mystical attachment/cleaving (אִתְקְשַׁר לְעֵילָּא) achieved through specific practices, culminating in experiential communion with higher realms and angelic voices. Text 1 focuses on intellectual focus and receptivity; Text 2 focuses on ascending mystical states and sensory-spiritual experience. Both value kavanah but approach it through different frameworks.