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，有關各方能繼續保持耐心，拿出誠意。
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.
對我們來說也是一樣的，爲了信仰受苦的意願越高，越能顯明我們信仰的純粹和對主的忠誠。
I had apologized and tried to demonstrate my sincerity in the way I’d treated and worked with the Republicans.
我已經道了歉，竝且盡量在與共和黨人相処和對待他們時表現出真誠。