en_tn/luk/02/08.md

in that same region

"in that area" or "near Bethlehem"

keeping watch over

"taking care of" or "guarding in order to keep them safe"

flocks of sheep

"groups of sheep."

at night

This could be translated as "after the sun had set and it was dark."

an angel of the Lord

This could be translated as "an angel from the Lord" or "an angel who serves the Lord" or "an angel who was sent by the Lord."

appeared to them

"came to them."