A holy love has a holy object

From Edwards' A Treatise Concerning Religious Affections:

A holy love has a holy object. The holiness of love consists especially in this, that it is the love of that which is holy, as holy, or for its holiness; so that it is the holiness of the object, which is the quality whereon it fixes and terminates. A holy nature must needs love that in holy things chiefly, which is most agreeable to itself; but surely that in divine things, which above all others is agreeable to a holy nature, is holiness, because holiness must be above all other things agreeable to holiness; for nothing can be more agreeable to any nature than itself; holy nature must be above all things agreeable to holy nature: and so the holy nature of God and Christ, and the word of God, and other divine things, must be above all other things agreeable to the holy nature that is in the saints. (3.iii)