'Evenings' in the Bible

“I have heard the murmurings of the Israelites; speak to them, saying, ‘At twilight you shall eat meat, and in the morning you shall be filled with bread; and you shall know that I am the Lord your God.’”

He said to me, “For 2,300 evenings and mornings; then the sanctuary will be cleansed and properly restored.”

“The vision of the evenings and the morningsWhich has been told [to you] is true.But keep the vision a secret,For it has to do with many days in the now distant future.”