In a medium bowl, mix together honey and Dijon mustard
Pour marinade over tenderloin and refrigerate for at least 4 hours.
Preheat grill to about 400 degrees F.
Lightly oil grill grate.
Remove meat from marinade and grill over indirect heat for approximately 20-25 mins or until a meat thermometer inserted into the center reads 145 degrees F. (Discard the remaining marinade)