'Adopted' in the Bible

Mordecai was the legal guardian of his cousin Hadassah (that is, Esther), because she didn’t have a father or mother. The young woman had a beautiful figure and was extremely good-looking. When her father and mother died, Mordecai had adopted her as his own daughter.

Esther was the daughter of Abihail, the uncle of Mordecai who had adopted her as his own daughter. When her turn came to go to the king, she did not ask for anything except what Hegai, the king’s trusted official in charge of the harem, suggested. Esther won approval in the sight of everyone who saw her.

And the Jews adopted what they had begun to do and what Mordecai had written to them.

the Jews established and adopted [it] for themselves and for their offspring, and for all who joined them. They did not neglect {to observe} these two days every year as it was written and appointed to them.