Ps 91:1-16. David is the most probable author; and the pestilence, mentioned in 2Sa 24:13-15, the most probable of any special occasion to which the Psalm may refer. The changes of person allowable in poetry are here frequently made.
1. dwelleth in the secret place -- (Ps 27:5; 31:20) denotes nearness to God. Such as do so abide or lodge secure from assaults, and can well use the terms of trust in Ps 91:2.
3. snares ... [and] ... noisome pestilence -- literally, |plagues of mischiefs| (Ps 5:9; 52:7), are expressive figures for various evils.
4. For the first figure compare De 32:11; Mt 23:37.
buckler -- literally, |surrounding| -- that is, a kind of shield covering all over.
5. terror -- or, what causes it (Pr 20:2).
by night -- then aggravated.
arrow -- that is, of enemies.
7, 8. The security is more valuable, as being special, and, therefore, evidently of God; and while ten thousands of the wicked fall, the righteous are in such safety that they only see the calamity.
9-12. This exemption from evil is the result of trust in God, who employs angels as ministering spirits (Heb 1:14).
13. Even the fiercest, strongest, and most insidious animals may be trampled on with impunity.
14-16. God Himself speaks (compare Ps 46:10; 75:2, 3). All the terms to express safety and peace indicate the most undoubting confidence (compare Ps 18:2; 20:1; 22:5).
set his love -- that of the most ardent kind.
16. show him -- literally, |make him see| (Ps 50:23; Lu 2:30).