In an emotional video online, Tim Tebow shares about how evangelist and apologist Ravi Zacharias has impacted his life and faith.

"I think it's really important in life to have heroes, and especially in the faith," Tebow says in a video posted to Instagram. Tebow chokes back tears as he shares about Zacharias' declining health.

Tebow asks his followers to pray for the well-known apologists. Tebow also asks people to comment on his post about how Zacharias' ministry has impacted their lives so that he could share the comments with Zaharias and his team.

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On May 8 it was announced that Zacharias' medical team felt there were no longer any treatment options available. Zacharias has returned home to be with his family.

"He's been an absolute inspiration, a hero of the faith, and he'll definitely be in the hall of faith. We're just so grateful for his life, for his impact, for his ministry," Tebow says.

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Just wanted to share this message in regards to my good friend and a hero of the faith, @ravizacharias. A couple of things, please join me in prayer for Ravi and his family as he battles this fight against cancer. Also, if Ravi has touched your life or inspired you along the way, I would love for you to share your story in the comments. I hope to be able to deliver your comments to Ravi and his team to encourage them in this time.

A post shared by Tim Tebow (@timtebow) on