Ben Carson's decision to endorse GOP presidential front-runner Donald TrumpDonald TrumpPerez and Ellison agree on DNC playing neutral role in primary Ellison: 'Begin investigations' on impeaching Trump Report: House measure forcing release of info on Trump conflicts likely to die in committee MORE divided his supporters, with many expressing shock and anger over the move on social media.
"I voted for you even though I knew you wouldn't win my area's primary," another wrote. The supporter added that it was "confusing why you would support a person who mocks God by saying he doesn't have to ask for forgiveness and disparages minorities including the disabled and women."
"Honestly I feel used," another person wrote. "I feel like you sold out. You speak of Party as if it has relevance in the kingdom. I am hurt and feel like you have used the flag of Christ to sell out for political gain. I will never support Donald Trump."
Carson has been a star in conservative circles since his 2013 speech at the National Prayer Breakfast criticizing President Obama.
Many supporters, even those who expressed initial shock at the endorsement, though, voiced their continued support for the soft-spoken retired neurosurgeon who ended his White House bid last week.
Carson sought to explain his endorsement of Trump in a note posted to his Facebook account where he argued that the businessman represented a deviation from the nation's current direction of "uncertainty" and "ruination."
The post received a mixed response, with more than 60,000 Facebook likes. Another 7,000 were angered by the post, 5,000 loved it and 2,700 were saddened, according to Facebook's new reactions.
"We can have disagreements, but it is critical that we not allow those disagreements to divide us as a party or as a country," Carson wrote of his decision to back Trump. The pair appeared together during a press conference in Florida on Friday morning where Carson suggested there are "two different Donald Trumps," the public persona and the private one.
The two hammered away at each other earlier in the race, with Trump once saying Carson had "pathological" issues, comparing them to those of a child molester.
In recent weeks, though, the two have shied away from targeting each other, with Trump focusing his attacks on other GOP rivals.