You use religious to describe things that are connected with religion or with one particular religion.
Religious groups are now able to meet quite openly.
宗教团体现在可以公开集会了。
different religious beliefs.
不同宗教信仰。
Someone who is religious has a strong belief in a god or gods.
They are both very religious and felt it was a gift from God.
他们俩都很虔诚,觉得这是上帝赐予的礼物。