These are two that I have greatly profited from.

And though I haven't finished these two (both about half way through), I'd also recommend: James Durham on Isaiah 53 (big and intimidating, but very understandable and helpful) & Willem Teellinck's The Path of True Godliness (English translation of a classic Dutch work, easy to read and insightful).

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Casey Bessette
Westminster OPC • West Suburbs of Chicago • My Blog: Paradise Regained

"It is part of the calling of the ekklesia to learn to know the love of Christ that surpasses all knowledge and also to make known within the world of science 'the manifold wisdom of God' in order that the final end of theology, as of all things, may be that the name of the Lord is glorified. Theology and dogmatics, too, exist for the Lord's sake." — Herman Bavinck, Reformed Dogmatics, vol. 1, p. 46