to send someone or something off with a commission, on behalf of and under the authority of the one who sends.
At its core this verb is more than getting a person from one place to another. It carries the idea of sending with a charge: the one sent goes as a representative, on a mission, backed by the authority of the sender. The messenger's words and acts count as the sender's own. That is why the New Testament leans on it so heavily for prophets, for the disciples Jesus commissions, and above all for the Father sending the Son.
The same verb covers the whole range of that sending. Most often it sends a person: a king's servants, a delegation, an angel, a prophet, an apostle. But it also dispatches things and sets actions in motion, and one old idiom uses it for putting a sickle to the harvest. These are not different words; they are the same act of sending applied to a person, an object, or a moment.
The weightiest use is in John's Gospel, where Jesus repeatedly speaks of the Father who sent him. There the verb is doing real work: it grounds Jesus' authority in the One who commissioned him, so that to receive Jesus is to receive the Father who sent him, and the mission passes on to the disciples in turn.