'Thousands' in the Bible

Furthermore, you shall select from all the people competent men who [reverently] fear God, men of truth, those who hate dishonest gain; you shall place these over the people as leaders of thousands, of hundreds, of fifties and of tens.

Moses chose able men from all Israel and made them heads over the people, leaders of thousands, of hundreds, of fifties and of tens [from the highest to the lowest judicial levels].

keeping mercy and lovingkindness for thousands, forgiving iniquity and transgression and sin; but He will by no means leave the guilty unpunished, visiting (avenging) the iniquity (sin, guilt) of the fathers upon the children and the grandchildren to the third and fourth generations [that is, calling the children to account for the sins of their fathers].”