Many Christians said they saw the extradition measure as opening a door for China’s severe restrictions on religious freedom to make their way into Hong Kong.

“The law is unjust,” said Carita Ng, 52. “It is very dangerous to citizens like us because it deprives us of free speech. As Christians, we need it more than anyone.”

The extradition bill was indefinitely suspended on Saturday after large numbers of people had taken to the streets twice in four days. The measure would allow criminal suspects to be transferred for trial in jurisdictions including mainland China, where the courts are controlled by the ruling Communist Party.

On Sunday, a day after the bill was suspended, protesters turned out in even bigger numbers, with crowds that organizers estimated at close to two million people demanding that the measure be fully withdrawn.

The demonstrators have focused much of their ire on Hong Kong’s top leader, Carrie Lam, who is a devout Catholic. On Tuesday, Mrs. Lam apologized for her handling of the bill and promised to better listen to the concerns of the public. Many protesters, who have called on her to resign, were unsatisfied with her apology.

For Christians, Mrs. Lam’s actions have a religious dimension. Many say they believe she has sinned and should step down. At the same time, they say they pray for her and hope she has a chance at redemption.

“She has gone astray,” said Ms. Wong, who has spent up to 10 hours a day singing, praying and marching during the protests. “I hope she will have the wisdom to do the right thing.”