Where is Advent Study #12? Good question.
After Eliakim we have Azor, Zadok, Achim, Eliud, and Eleazar. Interestingly there does not seem to be any information on these individuals.
Then we have:
one of our Lord's ancestry (Matt. 1:15)
A later man named Jacob was the father of Joseph, the foster-father of Jesus Christ (Matthew 1:15-16). Nothing more is known about him.
And so because I know you are going through withdrawal not having anything to read I offer these possibilities:
First, a chart of the Kings of Israel. Notice Matthew's genealogy goes through Judah. The chart outlines nicely whether the King did evil or good or some combination.
Second, I offer two Advent postings from MereComments which once again I don't think are entirely unrelated to our study:
First from December 17th this excerpt which includes canticles from the Orthodox : (you can read the whole posting here)
..Also from the Orthodox synaxarion: The "new martyrs" Paisius the abbot and Habakkuk the deacon: Saint Paisius was Abbot of a monastery in Serbia and Habakkuk was his deacon.
They were both impaled by the Turks at Belgrade on December 17, 1814. Dragging the stake on which he was to suffer through the streets of Belgrade, Habakkuk chanted the hymns of the Church. When his mother threw herself at his feet, begging him to adhere to Islam in order to save his life, he thanked her for her maternal solicitude, but rejected her advice as he recalled the great men of the Old Testament who suffered for the glory of God.
"Great men of the Old Testament"--like Daniel, and the Three Young Men in the furnace of Nebuchadnezzar. Habakkuk the deacon, in chanting the hymns of the church may well have sung one the traditional odes from matins before Christmas:
Scorning the impious decree, the Children brought up together in godliness feared not the threat of fire, but, standing in the midst of the flames, they sang: "O God of our fathers, blessed art Thou." (Canticle 7)
The furnace moist with dew was the image and figure of a wonder past nature. For it burnt not the Children whom it had received, even as the fire of the Godhead consumed not the Virgin's womb into which it had descended. Therefore let us sing: Let the whole creation bless the Lord and exalt Him above all for ever. (Canticle 8)
And this from today:
O come, o come, Thou Lord of might,who to thy tribes on Sinai's height in ancient times did give the law,in cloud, and majesty, and awe. Rejoice! Rejoice!Emmanuel shall come to thee, O Israel!