Syntax: The segment uses past perfect tense ('we've prayed') to establish a completed action relevant to the present. The phrase 'with no proof' functions as an adverbial prepositional phrase modifying the act of praying. 'In our hearts a hopeful song' is an inverted sentence structure for poetic effect, placing the prepositional phrase at the beginning.
Morphology: 'Barely' is an adverb modifying the verb 'understood'. 'Understood' is the past participle of 'understand', used here as part of a simple past verb phrase. 'Hopeful' is an adjective derived from the noun 'hope', modifying the noun 'song'.

Syntax: The structure 'Now we are not afraid' uses the present simple tense to state a current state. 'Although we know there's much to fear' is a subordinate clause of concession introduced by 'although'. The final line uses the past continuous tense ('were moving') before a temporal clause ('long before we knew we could').
Morphology: 'Afraid' is a predicative adjective following the linking verb 'are'. 'Moving' is the present participle of 'move', used in the past continuous tense. 'Could' is a modal verb in its past form, expressing ability in the past.

Syntax: 'There can be miracles' uses the existential 'there' construction to state a general possibility. 'When you believe' is an adverbial clause of time defining the condition for miracles. 'Though hope is frail' is another concessive clause. 'It's hard to kill' uses the dummy subject 'it' with an infinitive phrase ('to kill') as the real subject.
Morphology: 'Miracles' is a plural noun. 'Frail' is an adjective. 'Hard' is an adjective functioning as a subject complement. 'Kill' is a verb in its base form, part of the infinitive 'to kill'.

Syntax: 'When prayer so often proves in vain' is a relative clause modifying 'time of fear'. 'Hope seemed like the summer birds' uses a simile with 'like'. 'Too swiftly flown away' is a reduced adjective phrase modifying 'birds', where 'flown' is a past participle.
Morphology: 'Proves' is a present tense, third-person singular verb. 'In vain' is a prepositional phrase acting as a subject complement. 'Swiftly' is an adverb modifying the participle 'flown'. 'Flown' is the past participle of 'fly'.

Syntax: Complex sentence with multiple clauses. 'They don't always happen when you ask' is a main clause with a subordinate time clause. 'And it's easy to give in to your fear' is a coordinated clause using 'and'. 'But when you're blinded by your pain' introduces a contrast. 'Can't see your way safe through the rain' is a continuation of the 'when' clause. 'Thought of a still resilient voice says...' is the main clause following the conditional setup.
Morphology: 'Give in' is a phrasal verb. 'Blinded' is a past participle used as an adjective in a passive construction ('you're blinded'). 'Resilient' is an adjective. 'Says' is the present tense, third-person singular verb agreeing with 'voice'.