But in a religious situation that includes matters both good and evil, teachings both true and false, he may indeed use things and teachings that are good or of indifferent value as instruments of salvation. (religion-online.org)
We see the ark was God's instrument of salvation in Noah's story. (christianitytoday.com)
The Church's response to their situation should be to help them to embrace that cross in their lives as the instrument of their salvation. (faith.org.uk)