The Hebrew and Greek that is translated as “witness” in English is translated as “truly have seen” in Highland Popoluca, as “telling the truth regarding something” (Eastern Highland Otomi), as “know something” in Lalana Chinantec, as “verily know something to be the truth” in San Mateo del Mar Huave, as “we ourselves saw this,” in Desano, as “tell the truth about something” in Eastern Highland Otomi, as “know something is true because of seeing it” in Teutila Cuicatec. (Source: Viola Waterhouse in Notes on Translation August 1966, p. 86ff.)

They sacrificed to demons not God . . .

For the phrase “They sacrificed to demons, not God, to deities they had never known,” see 1 Corinthians 10:20.

Note that this quote in the New Testament is not taken from the Hebrew Bible but from the Greek Septuagint (LXX) which translates into English as “They sacrificed to demons and not to God, to gods they did not know.” (Translation by NETS — for the Greek version see the title’s tooltip)