YOU SAID:
yesterday today and tomorrow are of the same essence of last week.
INTO JAPANESE
昨日今日と明日は先週と同じ本質です。
BACK INTO ENGLISH
Yesterday today and tomorrow are the same essence as last week.
INTO JAPANESE
昨日今日と明日は先週と同じエッセンスです。
BACK INTO ENGLISH
Yesterday today and tomorrow are the same essence as last week.
That didn't even make that much sense in English.