Footnotes

1. 28:16 A stone in Zion: the true and sure foundation of salvation, i.e., the presence of God, who had chosen and founded Zion as his city (Ps 78:68–69; Is 14:32) and had chosen the Davidic dynasty to rule over his people (Ps 78:70–72; Is 9:1–6; 11:1–10). Cornerstone: the assurance of salvation, rejected by the people of Judah in the prophet’s time, is picked up in Ps 118:22 and later applied to Christ; cf. Mt 21:42; Lk 20:17; Acts 4:11; Rom 9:33; 1 Pt 2:7. Chapters 28–31 alternate between threats of the danger of rebelling against Assyria (with implied trust in Egypt) with assurances of the power and protection of the Lord.
2. 28:17 Line…level: instruments used in constructing a building, to keep it true. They are used metaphorically here to refer to the qualities that Zion, the city of God, must manifest, judgment and justice, not bloodshed (Mi 3:10), nor deceit and violence, which would result in a bulging unstable wall doomed to destruction (Is 30:12–14). Cf. 1 Cor 3:10–17.