Origen — as excerpted in the Catena Aurea on Matthew 21:1-9

“Whence also, when He ascended into heaven, He gave command to His disciples that they should loose sinners, for which also He gave them the Holy Spirit. But being loosed, and making progress, and being nourished by the Divinity of the Word, they are held worthy to be sent back to the place whence they were taken, but no more to their former labours, but to preach to them the Son of God, and this is what He signifies when He says, And straightway He will send them.”