But, did you know?
The resolution of the lens is just as important as the camera. If you put a cheap lens on an expensive camera, you just made your camera cheap too.
When you invest in a good lens, that investment is going towards the quality of the glass, which is the resolution of that lens.
Your images will look sharper and if you're a nature or sports photographer, you'll be able to crop into your photos and maintain good quality.
Higher lens resolution also helps with maintaining quality when you have large prints created.
When considering lenses to add to your camera bag, take a look at F/2.8 and F/4 lenses. Those have better resolution than F/5.6, F/8 and higher lenses.