Timothy Keller has been battling cancer for roughly a year, and just announced the doctors found more. 

"Let me give you a short update in answer to your inquiries of how things are going," Keller posted to Twitter.

Over the summer months, the Christian author and pastor from New York was doing relatively well. 

"After surgery last May, I was granted a 'chemo holiday' (missing one treatment) and was able to get out of town with my family for several weeks," he says. "On August 23 I had a scan and the primary tumor had not progressed. However, a mystery lump underneath the May surgical scar was removed and proved to be cancerous."

Keller has been grateful for people's continued prayers for him.

"We are well aware of your prayers and their power in holding us up to God and holding us together as we navigate treatment, isolation, and covid."

In 2020 Keller was diagnosed with pancreatic cancer. 

"Just to be safe, my doctor has increased my chemotherapy back to the level it was before, which has more side-effects, but we hope more therapeutic effects. Pancreatic cancer is able to learn how to evade medication, so it is only God's power that we look for complete healing."

Keller's faith has only strengthened over the past year, which he shared in detail

"Please do pray that I will be able to fulfill my teaching and other obligations, and that the neuropathy and other side effects will be minimal while the medication will be effective against the cancer, and that we will run the race God has set before us with joy," he says.

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