The future holds a complete transformation in the relationship between God and His people. In the familiar reality of human history, individuals must often pray repeatedly, and during times of exile, it can feel as though prayers are blocked and go entirely unheard. However, this dynamic will eventually be reversed and completely healed [רד״ק, ביאור שטיינזלץ]. God promises that all the deepest desires of the people will be fulfilled, and whatever they ask for will be granted [אבן עזרא]. His response will take the form of actual deeds, practically fulfilling the request at hand [מצודת ציון, שד״ל].
The primary approach among commentators is that this future closeness will manifest in two distinct scenarios of answered prayer. At times, God will grant the desires of the Israelites' hearts before they even have the chance to speak and ask. At other times, He will actively answer their requests while they are still in the very middle of praying [מצודת דוד, רד״ק].
Offering a different perspective, other scholars envision a state of absolute intimacy where formal prayer becomes entirely unnecessary. Rather than crying out to God, people will simply discuss their everyday needs among themselves. Just from hearing these casual conversations, God will instantly provide whatever is lacking [מלבי״ם]. This ideal, seamless existence will be made possible by a world completely at peace. With no predatory animals or harmful individuals left to cause distress, the desperate cries for help that once characterized human life will simply no longer be heard [מלבי״ם, ביאור שטיינזלץ].