4 sentences

1. 牧师在主日崇拜中向会众宣讲福音。

   mù​shī zài zhǔ​rì chóng​bài zhōng xiàng huì​zhòng xuān​jiǎng fú​yīn.

   The pastor preached the Gospel to the congregation during Sunday worship.

   Source: Dong Chinese Dictionary

2. 牧师每周日都会向信徒们宣讲教义。

   mù​shī měi Zhōu​rì dōu huì xiàng xìn​tú men xuān​jiǎng jiào​yì.

   The pastor preaches the doctrine to the believers every Sunday.

   Source: Dong Chinese Dictionary

3. 牧师向信徒们宣讲关于末日审判的教义。

   mù​shī xiàng xìn​tú men xuān​jiǎng guān​yú Mò​rì shěn​pàn de jiào​yì.

   The priest preached the doctrine of the Last Judgment to the believers.

   Source: Dong Chinese Dictionary

4. 专家们在社区宣讲最新的医疗保险政策。

   zhuān​jiā men zài shè​qū xuān​jiǎng zuì xīn de yī​liáo bǎo​xiǎn zhèng​cè.

   Experts are explaining the latest medical insurance policies in the community.

   Source: Dong Chinese Dictionary