Elder Bednar gave several examples, but I especially liked this one:
Sister Bednar and I knew each other for 19 months and dated for 15 months before we were married. I do not recall ever receiving a single, overwhelming spiritual confirmation that she was “the one.” I do recall that as we dated, as we talked, as we became better acquainted, and as we observed and learned about each other in a variety of circumstances, I received many small, simple, and quiet reassurances that she was indeed a remarkable and spiritual woman. All of those simple answers over a period of time led to and produced an appropriate spiritual reassurance that indeed we were to be married. That reassurance did not come all at once; rather, it was spiritually subtle and gradually distilled upon our minds as the dews from heaven, as described in the 121st section of the Doctrine and Covenants (see verse 45).https://www.lds.org/new-era/2010/09/line-upon-line-precept-upon-precept-2nephi-2830?lang=eng