Vous avez cherché: in morte, ut in vita, numquam partiemur (Latin - Anglais)

in morte ut in vita, numquam partiemur crevimus ad vocem eiusdem cordis
in death as in life we shall never part

in vita mors, in morte vita
death in life, life in death

ut in vita sic in mortes
such is life

frathes in vita eat in morte
brothers in life and death

et respondit ethai regi dicens vivit dominus et vivit dominus meus rex quoniam in quocumque loco fueris domine mi rex sive in morte sive in vita ibi erit servus tuu
and ittai answered the king, and said, as the lord liveth, and as my lord the king liveth, surely in what place my lord the king shall be, whether in death or life, even there also will thy servant be.

saul et ionathan amabiles et decori in vita sua in morte quoque non sunt divisi aquilis velociores leonibus fortiore
saul and jonathan were lovely and pleasant in their lives, and in their death they were not divided: they were swifter than eagles, they were stronger than lions.