And the mystery theologian is...

Yes,  as Tom Underhill was the first to point out, it was John Frame who said,

"To know God is to know him as Lord and therefore to pursue knowledge of him in a godly way. As we come to know God, we recognize that he initiates our knowledge, that his Word is the ultimate authority for our knowledge, and that in knowing God we come into a personal relationship with him. Theology is the application of Scripture to all areas of human life." (Salvation Belongs to the Lord: An Introduction to Systematic Theology, P&R, 2006, p. 72).

Name that theologian #4

Who said this?

"To know God is to know him as Lord and therefore to pursue knowledge of him in a godly way. As we come to know God, we recognize that he initiates our knowledge, that his Word is the ultimate authority for our knowledge, and that in knowing God we come into a personal relationship with him. Theology is the application of Scripture to all areas of human life."

And the mystery theologian is...

It was Richard Gaffin who said,

"The central soteriological reality is union with the exalted Christ by Spirit-created faith. That is the nub, the essence of the way or order of salvation for Paul. The center of Paul's soteriology, at the center of his theology as a whole, then, is neither justification by faith nor sanctification, neither the imputation of Christ's righteousness nor the renewing work of the Spirit."

By Faith, Not By Sight: Paul and the Order of Salvation, Paternoster, 2006, p. 43.

Gary Benfold was the first to give the correct answer to Name that theologian #3. However, in a dramatic twist Gary disqualified himself from the competition and deleted his comment on the grounds that he knew the answer rather than simply having a guess. Very honest of him I'm sure, but it isn't cheating to actually know the answer. So, I pronounce the learned Gary Benfold winner of Name that theologian #3, with Martin Downes and Mantovani close runners up.

Name that theologian #3

Who said this?

"The central soteriological reality is union with the exalted Christ by Spirit-created faith. That is the nub, the essence of the way or order of salvation for Paul. The center of Paul's soteriology, at the center of his theology as a whole, then, is neither justification by faith nor sanctification, neither the imputation of Christ's righteousness nor the renewing work of the Spirit."

And the mystery theologian is...

The prize (not that there is a prize) goes to Pastor Zach. As the man said, the "Name that theologian" quote was from Holiness (SCM Press) by John Webster.

Name that theologian #2

Who said this?

"Praise is the great act of rebellion against sin, the great repudiation of our wicked refusal to acknowledge God to be the Lord. In sum, therefore the Church is holy as, day by day, it magnifies God and worships his name, ever world without end."

And the mystery theologian is...

Top marks to Gary Benfold (see comments on Name that theologian #1). It was Joseph Ratzinger, not Karl Barth, A. W. Tozer or P. T. Forsyth who said,

"if the Church were to accommodate herself to the world in any way that would entail a turning from the Cross, that would not lead to a renewal of the Church, but only to her death." (Ratzinger's Faith: The Theology of Pope Benedict XVI, Tracey Rowland, 2009, OUP)

As a convicted Evangelical Protestant I can't disagree with that statement. We must never forget that the cross of Christ is the source of the Church's renewal. We live because he died. But it is regrettable that Roman Catholic teaching does not do justice to the saving efficacy of the cross. The finality of the atonement is undermined by the idea that Christ's propitiatory sacrifice is re-offered at the Mass. The sufficiency of the atonement is compromised by Rome's unbiblical teaching on purgatory. Christ suffered for the sins of his people, making any further suffering on their part in "purgatory" unnecessary. When Jesus said, "It is finished!" He meant it.

Name that theologian #1

Who said this?

"if the Church were to accommodate herself to the world in any way that would entail a turning from the Cross, that would not lead to a renewal of the Church, but only to her death."