T-shirt front:

"Tinyatselo Tesandla" means "fingerprints" in the African language called SiSwati.
Fingerprints is the theme of my upcoming mission work in Swaziland.
T-shirt back:

Explanation: The palm in the handprint is the shape of Africa, and the red heart represents the location of Swaziland; the colors in the fingerprints represent the colors of the Swazi flag; and the quote is a personal favorite of mine from Mother Teresa.