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WATCH: Oak Ridge Boys sing ‘Amazing Grace’ at George H.W. Bush Houston funeral

The Oak Ridge Boys, the country and gospel vocal quartet, sang “Amazing Grace” at the 41st president’s funeral Thursday at St. Martin’s Episcopal Church in Houston, Texas.

They were old friends of George H.W. Bush, who died last week at age 94.

Throughout the ceremony, Bush was remembered at his longtime church as a man of faith who taught Sunday School, served coffee and watched his children perform in a Christmas pageant.

The Rev. Russell Levenson, Jr. told mourners that Bush had a “resolute faith” and once asked what heaven would be like. He told those gathered at St. Margaret’s Episcopal Church that he imagined Bush was greeted in heaven by his wife, Barbara Bush, “with her hands on her hips, saying ‘What took you so long?'”

Levenson said it was OK to cry because George H.W. Bush was never afraid to shed tears himself.

Bush’s longtime pastor ended the homily with the same prayer used at the president’s 1989 inauguration.