Modern critical studies of the book of Isaiah and the Hebrew Psalter have found close affinities between the two, especially between Second Isaiah (Isa 40–55) and Book IV of the Psalter (Pss 90–106) on the basis of historical-referential, formal and redactional analysis. Looking from a different angle, this paper investigates the thematic parallels between Second Isaiah and Book IV of the Psalter as they are situated in their respective canonical context. The abrupt absence of the interest in a human messianic king both from Second Isaiah (as opposed to First Isaiah, i.e. Isa 1–39 and Book IV of the Psalter (as opposed to Books I–III, i.e. Pss 1–89) can be seen by the shift of hope in the Mosaic tradition and the divine kingship. While Book IV of the Psalter recalls Moses and the stories of the exodus, Second Isaiah presents a Moses-like servant, a new Moses in a new generation of Israel. As the messianic vision recedes, both Book IV of the Psalter and Second Isaiah express a reoriented focus on YHWH as the true King of Israel. This shift from an intensive concern for the Davidic dynasty to Moses, or a Mosaic figure, and to YHWH’s kingship represents the Israelites’ refreshed faith in the divine leadership during the exile as it was mightily revealed during the exodus, the symbolic and triumphant past.