“It is more an interpretive task, and eisogesis is an issue, but I’d place analysis and interpretation before it.”
When you start with a preconcluded belief and then go to the Bible and read that belief into anything that sounds similar, concluding it supports the elephant that followed you into the room, you are engaged in eisogesis. ie. Praying to saints, praying to Mary, etc.
When you start with God’s Holy Word, study it to understand language, sentence structure, context, historical context, etc. to rightly divide its meaning, you are engaged in interpretation. You are willing to accept what God has revealed in His Word, authoritatively, determining your beliefs and accepting what it teaches.
Doing the first is what mormons do with their “see and say” method of “interpretation”. They see a similar word and then infuse it with the meaning they started with.
Whether someone laid out the evidence first or the other way around is beyond our answering, since we weren’t there.
What we can do is take the evidence, analyze it, and then come up with our biblical interpretation. Adjusting that interpretation to fit our preconception rather than simply dealing with what’s there is the type of eisegesis that I’m most familiar with...after the fact rather than before the fact. Before the fact is really hard to pin down.