Esther 9:27

The Jews made a rule and established a custom that all their descendents should observe two days every year as ordered in the letter, at the fixed time every year.

Esther 8:17

And in every part of the kingdom and in every town, wherever the king's letter and his order came, the Jews were glad with great joy. They had a feast and a good day. A large number of the people of the land became Jews: for the fear of the Jews had come on them.

Isaiah 56:3

No foreigner bound to Jehovah should say: 'Jehovah will surely exclude (separate) me from his people. No eunuch should complain: I am only a dry tree.'

Isaiah 56:6

Foreigners have become allied with Jehovah, to serve Jehovah, to love the name of Jehovah, and to worship him. They keep the Sabbath without desecrating it and hold fast to my covenant.

Zechariah 2:11

Many nations will join themselves to Jehovah in that day, and will be my people! I will dwell in the your midst, and you will know that Jehovah of Hosts has sent me to you.

Deuteronomy 5:3

Jehovah did not make this covenant with our fathers, but with us, all of us here alive today.

Deuteronomy 29:14-15

You are not the only people to receive this promise and its conditions.

Joshua 9:15

Joshua made a treaty of peace with them to let them live. The leaders of the congregation ratified it by an oath.

1 Samuel 30:25

From that time on he made this a rule and a custom in Israel as it is to this day.

2 Samuel 21:1-2

There was a famine for three successive years during David's reign. David asked Jehovah for advice about it. Jehovah answered: It is because of Saul and his family. They are guilty of murder because they killed the people of Gibeon.

Esther 9:21

He ordered them to keep the fourteenth day of the month Adar and the fifteenth day of the same month, every year.

Zechariah 8:23

Jehovah of hosts said: In those days it will come to pass, that ten men out of all the languages of the nations, will take hold of the skirt of the one who is a Jew, saying, We will go with you, for we have heard that God is with you.

Treasury of Scripture Knowledge

Summary

The Jews ordained, and took upon them, and upon their seed, and upon all such as joined themselves unto them, so as it should not fail, that they would keep these two days according to their writing, and according to their appointed time every year;

Bible References

And upon their seed

Deuteronomy 5:3
Jehovah did not make this covenant with our fathers, but with us, all of us here alive today.
Deuteronomy 29:14
You are not the only people to receive this promise and its conditions.
Joshua 9:15
Joshua made a treaty of peace with them to let them live. The leaders of the congregation ratified it by an oath.
1 Samuel 30:25
From that time on he made this a rule and a custom in Israel as it is to this day.
2 Samuel 21:1
There was a famine for three successive years during David's reign. David asked Jehovah for advice about it. Jehovah answered: It is because of Saul and his family. They are guilty of murder because they killed the people of Gibeon.

All such

Esther 8:17
And in every part of the kingdom and in every town, wherever the king's letter and his order came, the Jews were glad with great joy. They had a feast and a good day. A large number of the people of the land became Jews: for the fear of the Jews had come on them.
Isaiah 56:3
No foreigner bound to Jehovah should say: 'Jehovah will surely exclude (separate) me from his people. No eunuch should complain: I am only a dry tree.'
Zechariah 2:11
Many nations will join themselves to Jehovah in that day, and will be my people! I will dwell in the your midst, and you will know that Jehovah of Hosts has sent me to you.
Zechariah 8:23
Jehovah of hosts said: In those days it will come to pass, that ten men out of all the languages of the nations, will take hold of the skirt of the one who is a Jew, saying, We will go with you, for we have heard that God is with you.