Where does “oath-helping” come from?

oath-helping (English) comes from English helping, from English help, from Middle English help, from Old English help, from Proto-West Germanic helpu, from Proto-Germanic helpō, from Proto-Indo-European ḱelb- — help.

oath-helping (English): Testimony introduced for the purpose of bolstering the credibility of a witness and their testimony, rather than proving or disproving a fact in issue; it is often inadmissible

Definitions

  1. Testimony introduced for the purpose of bolstering the credibility of a witness and their testimony, rather than proving or disproving a fact in issue; it is often inadmissible

Ancestry of “oath-helping”, step by step

oath-helping traces back through two separate lines of ancestry.

via English helping

StepLanguageWordMeaning
1EnglishhelpingA portion or serving, especially of food that one...
2EnglishhelpAction given to provide assistance; aid;...
3Middle Englishhelp
4Old Englishhelphelp
5Proto-West Germanichelpu
6Proto-Germanichelpōhelp, aid, assistance
7Proto-Indo-Europeanḱelb-help

via English oath

StepLanguageWordMeaning
1EnglishoathA solemn pledge or promise, appealing to a deity,...
2Middle Englishooth
3Old Englishāþoath
4Proto-West Germanicaiþoath
5Proto-Germanicaiþazoath
6Proto-Indo-Europeanoyt-
Every word from Proto-Indo-European ḱelb-