레위기 23:23의 주석

וידבר ה' אל משה, “the Lord spoke to Moses;” The reason why this sequence has been interrupted by telling us that G-d addressed Moses separately about the days of New Year and the Day of Atonement, something He had not done when speaking about Shavuot, is because each one of those festivals is something in its own right, as distinct from Shavuot which is inextricably linked to Passover as the reaping of the beginning of the barley harvest begins on the second day of Passover and the counting of the seven weeks links Passover to Shavuot.