Croft is to let the Reformers know that Arran has escaped out of France.

Such a chance will not again "come in our lives." We see what the chance is! On July 19 Knox writes again to Cecil, enclosing what he means to be an apology for his "Blast of the Trumpet," to be given to Elizabeth.

He says, while admitting Elizabeth's right to reign, as "judged godly," though a woman, that they "must be careful not to make entrance and title to many, by whom not only shall the truth be impugned, but also shall the country be brought to bondage and slavery.

God give you eyes to foresee and wisdom to avoid the apparent danger." {137b} The "many" to whom "entrance and title" are not to be given, manifestly are Mary Stuart, Queen of France and Scotland.
It is not very clear whether Knox, while thus working against a woman's "entrance and title" to the crown on the ground of her sex, is thinking of Mary Stuart's prospects of succession to the throne of England or of her Scottish rights, or of both.

His phrase is cast in a vague way; "many" are spoken of, but it is not hard to understand what particular female claimant is in his mind.
Thus Knox himself was intriguing with England against his Queen at the very moment when in his "History" he denies that communications were frequent between his party and England, or that any of the Regent's charges are true.