The writer speaks about himself as "your servant." Alternate translation: "Show me" or "Show me, your servant" (See: [[rc://en/ta/man/translate/figs-123person]])
The abstract noun "faithfulness" can be stated as an adverb or adjective. Alternate translation: "that you faithfully love me" or "that you are faithful to your covenant" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])