What does "Sperit" means?
figger is a pronunciation spelling of figure. Sperit is an old spelling of spirit; I figured about the Holy Spirit and the Jesus road.
In this paragraph the character Jim Casy, a former preacher who lost his faith, is talking about his his belief in the over-soul, a concept of man being a part of one soul, or the oversoul. The oversoul is coined by Ralph Waldo Emerson to mean " a spiritual essence or vital force in the universe in which all souls participate and that therefore transcends individual consciousness."(thefreedictionary.com).