3 sentences

1. 你们需要的是信念。

   nǐ​men xū​yào de shì xìn​niàn.

   What you need is faith.

   Source: OpenSubtitles

2. 你没有信念。

   nǐ méi​yǒu xìn​niàn.

   You have no faith.

   Source: OpenSubtitles

3. 坚定的信念能帮助我们克服一切困难。

   jiān​dìng de xìn​niàn néng bāng​zhù wǒ​men kè​fú yī​qiè kùn​nan.

   Firm conviction can help us overcome all difficulties.

   Source: Dong Chinese Dictionary