The video begins with Gavet saying they thought they would "go and bless a few people".
He and his brother and sister then go to the supermarket and buy a large amount of food and water, before making sandwiches from the boot of their car.
They deliver a few parcels to Robertson Lodge Boarding House in Avondale before handing parcels to people on the streets nearby and in the city centre.
The video ends with Gavey saying: "Thank you for watching our video and seeing us doing some of God's work ...
"Be good to people. Go ahead, be good to people."
Gavet has spoken openly about growing up with gang influences and his battle with alcoholism which began age 12.
The video has been viewed more than 5000 times.