婚誓体现了新婚夫妇对婚姻的忠诚。

Matrimonial vows are to show the faithfulness of the new couple.

youdao

真正的婚姻有赖于我们表现出信任与忠诚。

True marriage requires us to show trust and loyalty.

《牛津词典》

那么什么可以造就成功的婚姻呢？忠诚是第一位的。

So what makes a good marriage? Faithfulness comes out top of the list.

《柯林斯英汉双解大词典》