Using a food processor, add garlic, rosemary, sage, thyme, olive oil, salt, and pepper; process until a paste forms.
Cover strip loin with garlic and herb crust paste. Place in refrigerator to absorb flavor for at least an hour or refrigerate overnight.
Preheat oven to 450o Place strip loin, fat-side up, on rack in a roasting pan.
Roast strip loin uncovered for 15-20 minutes. Reduce temperature to 350oF and continue roasting until instant-read thermometer registers 130oF for medium rare doneness (approximately 35 minutes).
Remove the strip loin from the oven. Place strip loin on a clean plate or platter. Tent with foil and let rest 7-10 minutes.
Temperature will continue to rise about 10o-15oF to reach 145oF for medium rare doneness or 160oF for medium doneness.
Remove foil and carve strip loin into slices. Season with salt and pepper, as desired.