to demonstrate sincerity

基本解释

It is China’s hope that all parties concerned will continue to demonstrate patience and sincerity.
中方希望，有关各方能继续保持耐心，拿出诚意。
www.fmprc.gov.cn
The same is true with us. the more willing we are to suffer for the gospel, demonstrate our sincerity and loyalty to the lord we follow.
对我们来说也是一样的，为了信仰受苦的意愿越高，越能显明我们信仰的纯粹和对主的忠诚。
I had apologized and tried to demonstrate my sincerity in the way I’d treated and worked with the Republicans.
我已经道了歉，并且尽量在与共和党人相处和对待他们时表现出真诚。