Broncos quarterback Tim Tebow is vowing to make his critics pay for all the negative comments that have been made about his play this week. "I'm trying to insulate myself from what people in the media are saying, but I've seen some of it, and it hurts because it's coming from people who haven't seen me practice, haven't seen me play, haven't seen what I can do," Tebow told The Denver Post. "I did an interview the other day with someone on the NFL Network who said last year I'd never play a down in the NFL. He was wrong. "Others who say I won't make it are wrong. They don't know what I'm capable of and what's inside me. My family and my friends have been bothered by what's gone on, and I tell them to pay no attention to it. I'm relying as always on my faith." ESPN NFL analyst Merril Hoge said on Twitter that "it's embarrassing to think the broncos could win with tebow." Tebow was reminded of the NFL Network prediction that he'd never play a down as a pro. And he continued to practice with the reserves at training camp, despite starting the final three games for Denver last season. But Tebow vowed to emerge a better quarterback. "I'll always use the negativity as more motivation to work even harder and become even stronger," Tebow said. "I'll practice as good as I can, but I know that I play even better, with the qualities I have -- leadership, my ability to make something happen in games, winning. "And I know there are a lot of people who believe in me as a player and a person, and I don't want to let them down."