Leviticus 5:2

² If anyone becomes unclean through touching unconsciously some unclean thing, such as the dead body of an unclean beast or of unclean cattle or of any unclean animal which goes flat on the earth, he will be responsible:

Tenon

In Exodus 26:17, the two tenons that join the planks of the tabernacle signify the power that comes through truths from good. (Arcana Coelestia 9638)