Quinn declined to discuss the 76-year-old's ailment, but said: "She's seriously ill".
"When this place is packed, when she walks in the whole atmosphere changes", Smith, New Bethel's pastor for the past 36 years, told CBS News.
The 18-time Grammy victor is one of the best-selling artists of all time and was inducted into the Rock and Roll Hall of Fame in 1987.
The news comes as Far Out Magazine reported that news that Franklin is receiving hospice support at her home in Detroit.More news: Brendan Rodgers slams Celtic defending in AEK Athens loss
More news: Suspected Terrorist Attack in Central London Leaves Several People Injured
More news: Rupee recovers from life low, up 23 paise
There were unconfirmed reports she was diagnosed with pancreatic cancer in 2011. "They have not only asked for prayers during this time, but they have also asked for their privacy". "She'll say what she wants me to know and what she wants the world to know".
She won 18 Grammy awards throughout her storied career, including one for Lifetime Achievement. "Aretha Franklin, what a voice".
"Aretha Franklin has been ordered by her doctor to stay off the road and rest completely for at least the next two months", Franklin's management said in a statement at the time.
But there were no hard feelings by 2013, when Franklin defended Beyoncé for lip-syncing during her performance at President Barack Obama's second inauguration.
In an unusual move, a tribute concert produced by Live Nation and spearheaded by Sony Music Chief Creative Officer Clive Davis, who signed Franklin to Arista Records in 1980, has already been announced.
That same year, Detroit named a street after her.
The singer announced she was retiring from touring in 2017, and her final performance took place at the Elton John AIDS Foundation benefit in NY in November.