So Esther was taken unto king Ahasuerus into his house royal in the tenth month,
which is the month Tebeth,
in the seventh year of his reign.
Esther 2:16
Notice, Esther was taken after 6 years of the kings reign, the 7th year....sort of like a Sabbath, then afterward would be His queen. It's the Gospel story of God's people on display.