Sentence:  The <WSD>love</WSD> of your neighbor as yourself, is expressly given as the definition and test of Charity,—not alms-giving—and this <WSD>love</WSD> is [...] the highest of all the Divine commands[.]<!--the work's later "love of God" seems like sense 1.1 instead--> 
Meaning of the word marked with <WSD> tags:  Affectionate, benevolent concern or care for other people or beings, and for their well-being.