Merhaba!

I got stuck translating such a sentence:

I need to clear out two things here.

Firstly, what is the weird -tek suffix? Is it a kind of misspelling of İncil´deki?

And secondy, what is the sense of ise in this example? Does it work as a linker here?

It is "deki". "ise" means "as for" in that sentence.