We may receive a spiritual confirmation after studying the scriptures or while we read. Oliver Cowdery received a confirmation multiple times as he transcribed the Book of Mormon for the first time. The Lord taught him that, when we receive that confirmation, we have heard His voice.
“Above the Brightness of the Sun”
The Restoration began with a burst of light chasing away the darkness. Not ordinary darkness, but "thick darkness." Not ordinary light, but a pillar of light "above the brightness of the sun." God's light can dispel even the thickest of darkness.