I would liken Dr. Lane Tipton's lecture (entitled "Redemptive History, Merit, and the Sons of God") at the 2014 Reformed Forum conference to Dream Theater's stint at the Budokan—technical, precise, and O, so nice!
He invoked nuanced readings of portions of Meredith Kline's last published work, "God, Heaven, and Har Magedon," to bring home the point that Israel's role in the Mosaic administration of the Covenant of Grace as the typological son of God (contrasted with Adam as protological and Christ as eschatological) was not grounded on a republication of a meritorious Covenant of Works but a recapitulation of Adam's sin, fall, and exile, acting pedagogically to further manifest the utter necessity of the appearance of the eschatological Son of God!
"There's a distinction between the recapitulation of the sin-fall-exile of Adam on the one side and the republication of a merit principle for maintaining the land in Canaan on the other side...The problem with Israel was not that it violated a republished Covenant of Works that was given to Adam, nor was it that Israel violated a covenantal arrangement totally devoid of grace at the national level. The problem lies in the fact that Israel reenacts the sin and fall and exile of Adam by apostasy from the Covenant of Grace." (Lane Tipton, 'Redemptive History, Merit, and the Sons of God')
Abraham typified Christ positively by virtue of the reward of a holy people on account of the former's evangelical obedience.
Israel typified Christ negatively by virtue of the forfeiture of the holy land on account of the former's lack of evangelical obedience.
As the substance, Christ's person and work merited a holy people and a holy land, i.e., the glorified elect living in a New Earth.
What does all of this mean to me, this side of Christ's resurrection and ascension? It does highlight the fact that evangelical obedience, as incumbent upon the people of God and far from being an affront to the all-sufficiency of Christ's person and work, is actually a natural outworking of my union with Him.
It also means that when D. G. Hart mockingly refers to the "Obedience Boys," he actually honors them. Hehehe.