“Though the fig tree does not blossom, and there is no yield on the vines, the work of the olive fails, and the fields do not produce, etc.” (Chavakuk 3:17). “Though the fig tree does not blossom”: this is Avraham, as you say, “Like the first fruit on a fig tree in its first season, I saw your fathers” (Hoshea 9:10). “And there is no yield on the vines”: this is Sarah, as it says, “Your wife will be like a fruitful vine, etc.” (Tehillim 128:3). “The work of the olive fails [kichesh]”: those angels who brought Sarah the news lit up her face like [the light of] olive [oil]; were they deceiving [kochashim]? Rather, “and the fields [shedemos] produce no food”: those dead breasts [shadayim] produced no food. “The flock is cut off from the fold”: as you say, “And you are My flock, the flock of My pasture, you are men” (Yechezkel 34:31) [that is, Yisrael, who she feared would not come from her]. But “there is no cattle in the stalls”: as you say, “Ephraim is a trained calf that loves to thresh” (Hoshea 10:11). Sarah reconsidered and said, “Shall I lose my hope in my Creator? Rather, ‘I will exult in Hashem, I will rejoice in the G-d of my salvation’ (Chavakuk 3:18).” HaKadosh Baruch Hu said to her, “You did not lose your hope; I too will not let your hope be lost.” So: “And Hashem remembered Sarah, etc.” (Bereishis 21:1).