This rhetorical question can be translated as a statement. It can also be stated in active form. Alternate translation: "There is no other people group like you, a people whom Yahweh has saved ... majesty." (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-activepassive]])
This merism speaks of Yahweh defending the Israelites from their enemies and enabling them to attack their enemies. (See: [[rc://en/ta/man/translate/figs-merism]])
The word "shield" is a metaphor for Yahweh protecting and defending the Israelites. The abstract noun "help" can be translated as a verb. Alternate translation: "the one who protects you and helps you" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-abstractnouns]])
The word "sword" is a metaphor for the power to kill with the sword in order to win battles. Alternate translation: "the one who enables you to win battles and so have majesty" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Possible meanings are 1) the Israelites will destroy the places where the other people worship false gods or 2) the Israelites will walk on the backs of their enemies when the Israelites defeat them.