ROME >> Pope Francis hit the three-week mark Friday in his hospitalization for double pneumonia, in stable condition and resuming his therapies after giving the world a tangible indication of just how frail and sick he is.

The Vatican said the 88-year-old pope had a good night’s rest and woke up Friday morning just after 8 a.m. He resumed his respiratory and physical therapy, using high flows of supplemental oxygen to help him breathe. Doctors said they didn’t expect to give another medical update until Saturday, given his continued stability and absence of respiratory crises or other setbacks for several days now.

But Francis offered a first public sign of just how weak he is on Thursday by recording an audio message that was broadcast to the faithful in St. Peter’s Square who had gathered for the nightly recitation of the rosary prayer.

In it, Francis thanked the people for their prayers. But his voice was barely discernible through his labored breaths and he spoke in his native Spanish, not Italian.

“I thank you from the bottom of my heart for your prayers for my health from the square, I accompany you from here,” he said to the hushed square. “May God bless you and the Virgin protect you. Thank you.”

The messaged served many purposes. It was the first public sign of life from the pope since he entered Gemelli hospital on Feb. 14, and put to rest right-wing conspiracy theories and rumors calling into question his true medical status.

The Vatican said Francis himself wanted to record it, to thank all those people who had been praying for him. In his Sunday message last weekend, Francis said he had felt the affection of so many people and felt “as if I am ‘carried’ and supported by all God’s people.”

But the audio also underscored just how weak Francis is. For anyone used to hearing his voice, this audio — which is often so soft it sounds like a whisper — was an emotional punch to the gut that hammered home just how hard it is for him to even breathe.