Where does “advocateth” come from?

advocateth (English) comes from English advocate, from Old French advocat, from Latin advocātus, from Latin advocō, from Latin ad-, from Latin īn-, from Latin în, from Latin en — in.

advocateth (English): third-person singular simple present indicative...

Definitions

third-person singular simple present indicative...

Ancestry of “advocateth”, step by step

advocateth traces back through two separate lines of ancestry.

via English advocate

Step	Language	Word	Meaning
1	English	advocate	Someone whose job is to speak for someone's case...
2	Old French	advocat	—
3	Latin	advocātus	One called to aid
4	Latin	advocō	to call, invite or summon someone to a place, invoke
5	Latin	ad-	to; usually prefixed to verbs, in which cases it...
6	Latin	īn-	un-, non-, not
7	Latin	în	in, at, on, upon, from (space)
8	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
9	Proto-Italic	en	in
10	Proto-Indo-European	h₁én	in

via English eth

Step	Language	Word	Meaning
1	English	eth	A letter introduced into Old English to...

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →