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I.e., by means of the God-inspired commands issued by the Prophet (see preceding note).
Lit., "they would not do it, save for a few of them": the pronoun obviously relates to the half-hearted, who are not prepared to undergo the sacrifices which their faith demands of them. The reference to laying down one's life in the defence of faith and freedom and, if necessary, abandoning one's homeland, introduces, as it were, the long passage beginning with verse {71}, which deals with fighting in God's cause.
i.e., obeying Allah and His Messenger.
The highest in faith willingly sacrifice their lives, their homes, and all that they hold dearest, in the cause of Allah. Those whose faith is not so strong are expected at least to do what a loyal member of any society does, submit his doubts and disputes to the head of the society and cheerfully accept his decision and submit to it. The contrast is between the Hypocrites who will not even do this, and the really devoted men and women who would voluntarily sacrifice their lives.