A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown [1882] at sacred-texts.com
my soul--or self, or life, which is threatened.
shadow of thy wings-- (Psa 17:8; Psa 36:7).
calamities--literally, "mischiefs" (Psa 52:2; Psa 55:10).
performeth--or, completes what He has begun.
from . . . swallow me up--that pants in rage after me (Psa 56:2).
mercy and . . . truth-- (Psa 25:10; Psa 36:5), as messengers (Psa 43:3) sent to deliver him.
The mingled figures of wild beasts (Psa 10:9; Psa 17:12) and weapons of war (Psa 11:2) heighten the picture of danger.
whose . . . tongue--or slanders.
This doxology illustrates his view of the connection of his deliverance with God's glory.
(Compare Psa 7:15; Psa 9:15-16).
I will . . . praise--both with voice and instrument.
Hence--he addresses his glory, or tongue (Psa 16:9; Psa 30:12), and his psaltery, or lute, and harp.
I myself . . . early--literally, "I will awaken dawn," poetically expressing his zeal and diligence.
As His mercy and truth, so shall His praise, fill the universe.