Thy is a personal pronoun, representing nature, in the second person, singular number, and neuter gender; according to Rule 10th, which says, "A pronoun must agree with its antecedent, or the noun or pronoun which it represents, in person, number, and gender:" and is in the possessive case, being governed by portion; according to Rule 4th, which says, "A noun or a pronoun in the possessive case, is governed by the name of the thing possessed." Because the meaning is—thy portion.
Portion is a common noun, of the third person, singular number, neuter gender, and nominative case: and is put after are, in agreement with conflicts; according to Rule 6th, which says, "A noun or a pronoun put after a verb or participle not transitive, agrees in case with a preceding noun or pronoun referring to the same thing." Because the meaning is—conflicts are thy portion.
When is a conjunctive adverb of time: and relates to the two verbs, are and exert; according to Rule 21st, which says, "Adverbs relate to verbs, participles, adjectives, or other adverbs." Because the meaning is—what conflicts are thy portion, when inclination and habit exert, &c.
Inclination is a common noun, of the third person, singular number, neuter gender, and nominative case: and is one of the subjects of exert; according to Rule 2d, which says, "A noun or a pronoun which is the subject of a finite verb, must be in the nominative case." Because the meaning is—inclination and habit exert.
And is a copulative conjunction: and connects inclination and habit; according to Rule 22d, which says, "Conjunctions connect words, sentences, or parts of sentences." Because the meaning is—inclination and habit.
Habit is a common noun, of the third person, singular number, neuter gender, and nominative case: and is one of the subjects of exert; according to Rule 2d, which says, "A noun or a pronoun which is the subject of a finite verb, must be in the nominative case." Because the meaning is—inclination and habit exert.
A is the indefinite article: and relates to rebel; according to Rule 1st, which says, "Articles relate to the nouns which they limit." Because the meaning is—a rebel.
Rebel is a common noun, of the third person, singular number, masculine gender, and nominative case: and is put in apposition with inclination; according to Rule 3d, which says, "A noun or a personal pronoun used to explain a preceding noun or pronoun, is put, by apposition, in the same case." Because the meaning is—inclination, a rebel.
And is a copulative conjunction: and connects rebel and traitor; according to Rule 22d, which says, "Conjunctions connect words, sentences, or parts of sentences." Because the meaning is—a rebel and a traitor.
A is the indefinite article: and relates to traitor; according to Rule 1st, which says, "Articles relate to the nouns which they limit." Because the meaning is—a traitor.