@Krumple,
Krumple wrote:that everyone is an agnostic.
My favorite aunt, a Colonel in the Salvation Army,
knew that her saviour liveth.
know
verb
1 [with clause] Be aware of through observation, inquiry, or information
1.1 [with object] Have knowledge or information concerning
1.2 Be absolutely certain or sure about something
2 [with object] Have developed a relationship with (someone) through meeting and spending time with them; be familiar or friendly with:
2.1 Have a good command of (a subject or language).
2.2 Recognize (someone or something)
2.3 Be familiar or acquainted with (something)
2.4 Have personal experience of (an emotion or situation): a man who had known better times
2.5 Regard or perceive as having a specified characteristic
2.6 Give (someone or something) a particular name or title
2.7 Be able to distinguish one person or thing from (another)
3 [with object] archaic Have sexual intercourse with (someone).