In Joseph's typology, what did his being thrown into the pit mean?
In Joseph's typology, being cast into the pit signified death: his brothers considered him dead. This prefigured Christ, who was also hated and rejected by His brethren and counted as dead, before resurrection and the taking of a Gentile bride.
Les explains that Joseph being thrown into the pit was a picture of death: his brothers considered him dead. That matches Christ, who was hated and rejected by His brethren, Israel, and counted as dead. Then the Ishmaelites came along, which Les calls a type of resurrection—even though Joseph was dead, yet he's alive, and so with Christ. After being taken for dead and restored to life, both Joseph and Christ take a Gentile bride: Joseph takes an Egyptian bride; Christ is exiled from His rightful throne in Jerusalem and returns to heaven until Psalm 110:1 is fulfilled, when He will return.