3 sentences

1. 他相信因果报应，因此为人非常厚道。

   tā xiāng​xìn yīn​guǒ bào​yìng, yīn​cǐ wéi​rén fēi​cháng hòu​dao.

   He believes in karma, so he is a very kind person.

   Source: Dong Chinese Dictionary

2. 许多宗教都相信因果报应和生死轮回。

   xǔ​duō zōng​jiào dōu xiāng​xìn yīn​guǒ bào​yìng hé shēng​sǐ lún​huí.

   Many religions believe in karma and the cycle of life and death.

   Source: Dong Chinese Dictionary

3. 佛教讲究因果报应，认为这一世的苦难是前世留下的宿命。

   Fó​jiào jiǎng​jiu yīn​guǒ bào​yìng, rèn​wéi zhè yī shì de kǔ​nàn shì qián​shì liú​xià de sù​mìng.

   Buddhism emphasizes karma, believing that the suffering of this life is the destiny left over from previous lives.

   Source: Dong Chinese Dictionary