"Well now, Guardian… Your Power increases, but I can see you're not done yet. There are more battles to be won… More lost frontiers to explore and more secrets to uncover."
Now, you can increase your Power level only by acquiring powerful gear. Continue to seek these treasures by completing challenges, decrypting Prime Engrams, and testing your might in pinnacle activities such as raids.
Keep pushing the limits of your strength, and you will continue to grow even more formidable.