'Understanding' in the Bible

wanting to be teachers of the Law [of Moses], even though they do not understand the terms they use or the subjects about which they make [such] confident declarations.

understanding the fact that law is not enacted for the righteous person [the one in right standing with God], but for lawless and rebellious people, for the ungodly and sinful, for the irreverent and profane, for those who kill their fathers or mothers, for murderers,