The question is not whether there is only one conception in the sense of the Scriptures, for we grant that often there are many conceptions of one and the same sense (but subordinate and answering to each other especially in the composite sense which embraces type and antitype). The question is whether there may be many diverse and non-subordinated senses of the same passagehttps://www.reformowani.info/wp-content/uploads/2022/10/Institutes-of-Elenctic-Theology-Francis-Turretin-vol-1.pdf
That the Scriptures have only one sense is evident: (I) from the unity of truth—because truth is only one and simple and therefore cannot admit many senses without becoming uncertain and ambiguous; (2) from the unity of form— because there is only one essential form of any one thing (now the sense is the form of the Scriptures); (3) from the perspicuity of the Scriptures, which cannot allow various foreign and diverse senses.https://www.reformowani.info/wp-content/uploads/2022/10/Institutes-of-Elenctic-Theology-Francis-Turretin-vol-1.pdf
We thus think that only one true and genuine sense belongs to the Scriptures. That sense may be twofold: either simple or compound. Simple and historical is that which contains the declaration of one thing without any other signification; as the precepts, the doctrines and the histories. And this again is twofold, either proper and grammatical or figurative and tropical; proper, arising from the proper words; tropical, from figurative words. https://www.reformowani.info/wp-content/uploads/2022/10/Institutes-of-Elenctic-Theology-Francis-Turretin-vol-1.pdf