With Moses away, the idolatrous apostasy at Sinai was met by Aaron’s strategy of appeasement. It was a disaster, condemned by God (yet recurring to this day in evangelical history). How different from the stance of Moses – a type of Christ and an example to us!
The apostle first shows that the ministry of Christ’s church is described in prophecy. He then identifies the different kinds of teacher by their tasks (expounded here), and states the great objectives of all ministry – soul-winning, sanctification, and closeness to Christ.