Pesach is to be celebrated throughout all the generations of the people of Israel wherever they lived. In Joshua chapter 5, the Israelites celebrate Pesach in Gilgal after taking flint knives and circumcising all the men who had come out of the wilderness. In 2 Kings chapter 23, King Josiah destroys all the high places and idols in Israel, and the nation celebrates Pesach in Jerusalem for the first time since the days of the Judges. In Ezra chapter 6, when the Israelites return from captivity in Babylon, everyone who renounced the pagan practices of the nations celebrated the Pesach.
God uses many different ‘signs’ in the Scriptures to reveal Himself, to direct people where they should go and to establish covenants. Each ‘sign’ had a prophetic purpose and brought forth a response from the person or people to whom it was given.