At Drouin Presbyterian you'll find that the preaching is "systematic" & "expository".  Systematic means working our way through books of the Bible.  Expository preaching involves the comprehensive explanation of the Scriptures. 

It presents the meaning and intent of a biblical passage, providing commentary and examples to make the passage clear and understandable.  The goal is to expose the meaning of the Bible, verse by verse.

When asked why he has remained committed to expository preaching over other preaching paradigms, John MacArthur Jnr explained:

Well first, because it is a biblical mandate. It doesn’t fluctuate with culture, with expectations, with times or seasons. Expository preaching is the best way to preach the Bible. If every word of God is pure, if every word of God is true, then every word needs to be dealt with. And expository preaching is the only way you actually come to grips with every word in the Scriptures. 

Secondly, expository preaching familiarizes people with the Scripture itself instead of simply giving them a speech, as true and as reflective of biblical teaching as that speech may be. With expository preaching, people become familiar with the Scripture. They can go back to the passages that have been addressed, and they can be reminded by the text itself of what it means. So you give people the Word of God in a way that has long-term impact, because it makes them familiar with Scripture. 

Thirdly, it makes the authority unequivocal, and that authority is the Scripture. That’s very clear no matter how powerful or gifted the preacher might be. In consistent, expository preaching, the people always know what the authority is. It’s not about homiletics. It’s not about personal viewpoints and insights. It’s about relentlessly affirming the true authority of Scripture, which is the most critical thing that anybody can ever learn. It isn’t about, “Wasn’t that a great sermon?” It isn’t about, “Wasn’t that a great outline? Wasn’t that clever?” It’s always about, “What did the Word of God say?” And that makes it truly authoritative, because the Word is from God. No other preaching paradigm does this.

Click here to read another article about expository preaching.