The Hebrew word "ever" . . . which means eternal, forever, vanishing point, as in receeding into eternity, no end in sight, forerver and ever . . .
The word olam is used in II Samuel to describe David's Throne . . . the Throne of Messiah . . . it shall be olam . . . forever.
This word is ALSO used in Leviticus 23
"Ye shall do no manner of work: IT SHALL BE A STATUTE FOR EVER (OLAM) THROUGHOUT YOUR GENERATIONS IN ALL YOUR DWELLINGS."
Let us keep the Hebrew Feasts, let us keep Torah. They are . . . OLAM.