Duties of social life, viz. brotherly love, hospitality, and sympathy with those who suffer for Christ's sake.
Related Commentaries of Hebrews 13:1
Hebrews 13:1-3
1 Let brotherly love continue.
2 Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.
3 Remember them that are in bonds, as bound with them; and them which suffer adversity, as being yourselves also in the body.