Archaic expression meaning 'from now on' or 'in the future'. Used in classical or formal historical contexts; in modern Japanese, 今後 (こんご) or これから is used instead.
Henceforth, you shall protect this land.
Modern equivalent meaning 'from now on' or 'in the future', used in everyday speech and writing.
Common colloquial expression for 'from now on', more casual than 今後.
A literary Sino-Japanese expression based on Classical Chinese 自今以後, literally “from now onward.”