All the believers were one in heart and mind. No one claimed that any of their possessions was their own, but they shared everything they had. With great power the apostles continued to testify to the resurrection of the Lord Jesus. And God’s grace was so powerfully at work in them all that there was no needy person among them. For from time to time those who owned land or houses sold them, brought the money from the sales and put it at the apostles’ feet, and it was distributed to anyone who had need.
Joseph, a Levite from Cyprus, whom the apostles called Barnabas (which means ‘son of encouragement’), sold a field he owned and brought the money and put it at the apostles’ feet.
Since many people were making donations of land or houses, I'm wondering why Barnabas was singled out for mention? Was it a way to introduce him to the narrative? Was this how he got his nickname (Barnabas)? (I think that is unlikely because he was the only one named; no other field / home seller is called encouraging.)
Finally, it seems to me that all the money from the sale of a house or a field would be a huge donation. Is that correct?
* I apologise for asking multiple questions at once; I'm doing so because I think they may be related, but I'm open to splitting this up, if requested.