Esther 9:28

how that these days are not to be forgotten, but to be kept of the children's children among all kindreds in all lands and cities. They are the days of Purim, which are not to be overslipped among the Jews, and the memorial of them ought not to perish from their seed.

Exodus 12:17

And see that ye keep you to unleavened bread. For upon that same day I will bring your armies out of the land of Egypt, therefore ye shall observe this day and all your children after you, that it be a custom forever.

Exodus 13:8-9

And thou shalt show thy son at that time, saying, 'This is done, because of that which the LORD did unto me when I came out of Egypt.'

Joshua 4:7

Then say unto them, 'How that the water of Jordan divided at the presence of the ark of the covenant of the LORD: even while it went over Jordan, the water of Jordan divided.' And these stones shall be a memorial unto the children of Israel forever."

Psalm 78:5-7

He made a covenant with Jacob, and gave Israel a law, which he commanded our forefathers to teach their children,

Psalm 103:2

Praise the LORD, O my soul, and forget not all his benefits.

Zechariah 6:14

And the crowns shall be in the temple of the LORD, for a remembrance unto Heldai, Tobijah and Jedaiah and Hen the son of Zephaniah. And such as be far off, shall come and build the temple of the LORD,

Treasury of Scripture Knowledge

Summary

And that these days should be remembered and kept throughout every generation, every family, every province, and every city; and that these days of Purim should not fail from among the Jews, nor the memorial of them perish from their seed.

Bible References

Remembered

Exodus 12:17
And see that ye keep you to unleavened bread. For upon that same day I will bring your armies out of the land of Egypt, therefore ye shall observe this day and all your children after you, that it be a custom forever.
Psalm 78:5
He made a covenant with Jacob, and gave Israel a law, which he commanded our forefathers to teach their children,
Psalm 103:2
Praise the LORD, O my soul, and forget not all his benefits.

The memorial

Exodus 13:8
And thou shalt show thy son at that time, saying, 'This is done, because of that which the LORD did unto me when I came out of Egypt.'
Joshua 4:7
Then say unto them, 'How that the water of Jordan divided at the presence of the ark of the covenant of the LORD: even while it went over Jordan, the water of Jordan divided.' And these stones shall be a memorial unto the children of Israel forever."
Zechariah 6:14
And the crowns shall be in the temple of the LORD, for a remembrance unto Heldai, Tobijah and Jedaiah and Hen the son of Zephaniah. And such as be far off, shall come and build the temple of the LORD,