## walk through the length and breadth of the land ##

This can be translated as "walk around all over the whole land."

## oaks ##

See how you translated “oak” in [Genesis 12:6](../12/06.md).

## Mamre ##

This was the name of the man who owned the oak trees.

## an altar to Yahweh ##

"an altar dedicated to Yahweh" or "an altar for worshiping Yahweh"