Geerhardus Vos, The Doctrine of the Covenant in Reformed Theology:
[Thomas Blake] wrote a detailed treatise with the title: Vindiciae Foederis, a Treatise about God’s Covenant Made with Man, in its Various Types and Degrees. The first publication dates from  the second, notably modified and amplified, from 1658. Blake was a clear thinker. He deals with all the thorny questions to which the doctrine of the covenant had given rise and discusses them in a manifold fashion. He develops his own opinion with a consistency which arouses admiration, even where it cannot always be accepted precisely because of this consistency. Because he clearly carries through the doctrine of an external covenant, he occupies a unique position.