en_tn/gen/14/13.md

one who had escaped came

This can be translated as "A man escaped from the battle and came."

He was living

"Abram was living." This introduces background information. (See: rc://en/ta/man/translate/writing-background)

oaks

See how you translated "oak" in Genesis 12:6.

were all allies of Abram

"were treaty-partners with Abram" or "had a peace agreement with Abram."

his relative

This refers to Lot.

trained men

"men who were trained to fight"

men, born in his house

"men who were born in Abram's household." They were children of Abram's servants.

pursued them

"chased them"

Dan

This is a city in the far north of Canaan, far from Abram's camp.