Psalm 91, traditionally credited to Moses, reflects his profound skill as a psalmist, establishing him as the original songwriter of Israel. His work in this psalm follows the style and themes that later psalmists would emulate, showcasing his deep connection with God. As a piece of sacred poetry, Psalm 91 continues the tradition of praise and meditation seen in Moses' other compositions, affirming his significant role in biblical literature.

Psalm 91 begins to show the progression of time among these psalms. It has been called the place of safety psalm. It gives an idea of the terrors that occur during the Great Tribulation and the Day of the Lord. Those who are faithful and whom He chooses receive shelter and protection from all the terrible things that occur. Many different dangers appear in the psalm. These include the snare of the fowler and perilous pestilence. The psalm also speaks of the terror by night and the arrow that flies by day. It mentions pestilence, destruction, wasting things, and great battles that happen nearby so that they can be seen with the eyes. Yet none of the evil befalls the protected ones. The psalm can also apply generally to any Christian during hard times. It does not have to apply only during the time of the place of safety. It moves events forward because things grow worse in the world. Disasters of many kinds take place. Yet God's people remain pretty much spared from these events. That is what God promises here. Even though things may grow bad, reliance can be placed on God to keep His people safe because He is their refuge. Trust can be placed in Him for that safety. Reliance can always be placed on God and His promises and His truth. Verses 14 through 16 contain a very confident promise from God. Because he has set his love upon Me, therefore I will deliver him. I will set him on high, because he has known My name. He shall call upon Me, and I will answer him. I will be with him in trouble; I will deliver him and honor him. With long life I will satisfy him, and show him My salvation. The promise contains no qualification. It states in confident terms that God will satisfy him, deliver him, show him salvation, and set him on high. These words provide something to have faith in. God has a plan and His will. Certain things need to occur in a certain timing. All things work together for good to those who love God and who are the called according to His purpose. He has the best interests of His people at heart. Even if the promise is not seen fulfilled in the desired way, He will fulfill the promise. He can make this promise because He is the sovereign God over everything and over time itself. These two psalms get the attitude right and build faith. Those who have set their love on God and have known His name will see these promises fulfilled by God. Faithfulness is needed. Things will grow worse, and this attitude and faith are needed to face what is coming.

Psalm 91 is read as the "Place of Safety" psalm, describing a time of extreme danger during the Day of the Lord, when the world is torn apart by plague, war, terror, and mass death. The pronouns shift from the psalmist ("I," "my"), to the reader ("you"), to God ("Me," "My") in verses 14-16. Those who dwell in God's own "secret place" are shielded by His angels. They can look on and see the reward of the wicked, yet none of the destruction comes near them. The "snare of the fowler" points to plots to capture and kill believers, and the lions and cobras may symbolize powerful and cunning enemies who cannot get in by strength or by guile. In verse 14, God gives two reasons for this protection. The faithful have set their love on Him, chesed, meaning covenant loyalty, and they have known His name, meaning they diligently sought to know His character and grew to be like Him. In return He promises eight things: deliverance, exaltation, answered prayer, His presence in trouble, honor, long life (likely eternal life), satisfaction, and salvation. That last promise may even mean seeing Christ's return. Psalm 91 follows Psalm 90 without naming an author, and the preacher would like to think Moses wrote it. It is set beside Psalm 94, which speaks for a different group who must endure the tribulation and plead for God's vengeance.