Hebrews 13:2

1 Continue in brotherly love.

Do not neglect to show hospitality to strangers, for by so doing some people have entertained angels without knowing it.

3 Remember those in prison as if you were bound with them, and those who are mistreated as if you were suffering with them.

4 Marriage should be honored by all and the marriage bed kept undefiled, for God will judge the sexually immoral and adulterers.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Do not neglect to show hospitality to strangers, for by so doing some people have entertained angels without knowing it.
KJV
Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.
WEB
Don’t forget to show hospitality to strangers, for in doing so, some have entertained angels without knowing it.
ASV
Forget not to show love unto strangers: for thereby some have entertained angels unawares.
DARBY
Be not forgetful of hospitality; for by it some have unawares entertained angels.
BLB
Do not be forgetful of hospitality, for through this, some entertained angels unawares.
ÅB
Glem ikke gjestfrihet! for ved den har noen uten å vite det hatt engler til gjester.
OTB
Forsøm ikke å vise gjestfrihet mot fremmede, for ved å gjøre det har noen hatt engler som gjester uten å vite det.
B1930
Glem ikke gjestfrihet! for ved den har nogen uten å vite det hatt engler til gjester.

Study notes (Tyndale)

Original text and word study

Cross references