A solemn commitment is made to fulfill promises to God in a deeply public manner. These promises specifically take the form of sacrifices [רש״י], which likely include special offerings of thanksgiving [ביאור שטיינזלץ].
This exact declaration appears earlier in the psalm, and the repetition serves to highlight the exclusive location chosen for fulfilling the vows. The promised sacrifices will not be offered in any random place. Instead, they are reserved strictly for the courtyards of the House of God in Jerusalem, the sacred site that houses the Ark of the Covenant [אבן עזרא, רד״ק]. The fulfillment of these promises is designed to be a highly visible event, taking place openly within Jerusalem before the entire nation [מאירי].
Beyond the location, there is a specific urgency regarding the timing of this public display. Even though vows can technically be fulfilled at a later date, the request here is to perform the act immediately. By bringing the offerings right now, in full view of the public, any enemies watching will witness the event and be brought to shame [אלשיך].
Regarding the structural division of the chapters of Psalms, different traditions exist. While standard texts place this declaration near the conclusion of the current psalm, certain manuscript traditions view this exact point as the absolute end of the psalm, treating the text that follows as an entirely separate composition [מאירי].