Everything only through Jesus Christ

(Source: https://en.wikipedia.org/wiki/Geerhardus_Vos)

‘Only when the believer understands how he has to receive and has received everything from the Mediator and how God in no way whatever deals with him except through Christ, only then does a picture of the glorious work that God wrought through Christ emerge in his consciousness and the magnificent idea of grace begin to dominate and form in his life. For the Reformed, therefore, the entire ordo salutis [order of salvation], beginning with regeneration as its first stage, is bound to the mystical union with Christ. There is no gift that has not been earned by Him. Neither is there a gift that is not bestowed by Him and that does not elevate God’s glory through his bestowal. Now the basis for this order lies in none other than in the covenant of salvation with Christ. In this covenant those chosen by the Father are given to Christ. In it he became the guarantor so that they would be planted into His body in the thought-world of grace through faith. As the application of salvation by Christ and by Christ’s initiative is a fundamental principle of Reformed theology, this theology has correctly viewed this application as a covenantal requirement which fell to the Mediator and for the fulfilling of which He became the guarantor. In this way Reformed theology simply showed that here too it would be content with nothing but its one all-embracing slogan: the work of grace in the sinner as a mirror for the glory of God.’

  -- p248, Geerhardus Vos, The Doctrine of the Covenant in Reformed Theology in Redemptive Historyand Biblical Interpretation

Never say you are losing time by going to [the Theological College]

“If theological education will increase your power for Christ, is it not your duty to gain that added power? . . . Never say you are losing time by going to school. You are saving time, buying it up for the future and storing it away. Time used in storing power is not lost.” A. T. Robertson, quoted in the Going Deeper with the New TestamentGreek, p8

Every sermon is a "salvation sermon"

Preaching is a means of grace to assist the saints to persevere. Perseverance is necessary for final salvation. Therefore, every sermon is a "salvation sermon"—not just because of its aim to convert sinners, but also in its aim to preserve the holy affections of the saints and so enable them to confirm their calling and election and be saved.
  -- p81, The Supremacy of God in Preaching by John Piper

The greatest treasure the world has ever seen or wanted

Referring to the bible, Bullinger says:

  "For by the vigilant care and unspeakable goodness of God, our Father, it is brought to pass, that no age at any time either hath or shall want so great a treasure."
  -- p55, The Decades of Henry Bullinger, vol. I

How to put your theological education to good use

"A good rule of thumb is that if you cannot express your ideas in ordinary language that the person in the pew could understand, then they are probably not worth airing. If you need to talk about 'realized eschatology' and 'redaction critical technique' then either you haven't grasped the ideas very firmly yourself or they are probably pretty irrelevant."
  -- Laura Jervis, Keeping Your Balance, ed. Philip Duce & Daniel Strange, p48

Why do you read the bible?

[But] interpretation is not an end in itself; reading the Bible is not fundamentally a comprehension exercise. Interpretation should serve only to lead us to an encounter with God as he actually presents himself to us in Scripture.[…]Many evangelicals worry about ‘getting Scripture wrong’. Of course we should be concerned to interpret the meaning of Scripture well, for every believer should be growing in knowledge and understanding of Scripture. However, our greater concern should be the ease with which we can content ourselves with learning the truth, while refusing to let God act in us with that truth as the sharp sword he intended it to be.
 - Timothy Ward, Words of Life, p.175 (italics original)