So for the origin of the object, we don't have to reveal how the pen has its powers or how it was made, since the mystery behind the SCP is a large part of what makes them successful, but we do need to think up something interesting for how the Foundation found out about the SCP and acquired it.
Romans 8:31 What, then, shall we say in response to this? If God is for us, who can be against us?
1 Corinthians 13:1-3 If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.