How Can I Feel Lasting, Satisfying Faith?

Several years ago, my sister and her husband began to experience a crisis of faith. They had started studying the arguments of the skeptics and were becoming persuaded.  They began to question whether the foundational claims of Christianity were true and whether there was a God at all. They frequently came to me with difficult questions. At first, I was reluctant to engage because I did not want to focus all my spiritual energy on negative things. However, my sister and her husband felt that I c...
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