Just as the Israelites were "faint and weary" in exile, the OCS members are exhausted by Adriel's mounting influence and the loss of their allies.
The verse was originally addressed to Israelites in Babylonian exile who felt abandoned by God. It promises a supernatural "exchange" of human exhaustion for divine strength. The "waiting" or "hoping" described is not passive, but a determined trust in a higher power despite dire circumstances. Narrative Parallel in Warrior Nun [S2E6] Isaiah 40:31
Below is an overview of the episode's narrative and how it utilizes the themes of its namesake scripture. Just as the Israelites were "faint and weary"
Adriel murders Pope Duretti, a move that shocks the characters and complicates the political and spiritual landscape of the series. [S2E6] Isaiah 40:31