Which Protestant interprets the Bible infallibly?
A better question: Which Catholics interpret the Bible infallibly? Your clownish crew, if not turning the Bible into a collection of "fables" in the footnotes of your approved bible translations, are sodomizing each other or plotting with your Pope on how to fool the gullible faithful who are still praying to Mary for their salvation instead of getting with the times and becoming Marxists.
Who cares?
"One indeed is the universal Church of the faithful, outside which no one at all is saved, in which the priest himself is the sacrifice, Jesus Christ, whose body and blood are truly contained in the sacrament of the altar under the species of bread and wine; the bread (changed) into His body by the divine power of transubstantiation, and the wine into the blood, so that to accomplish the mystery of unity we ourselves receive from His (nature) what He Himself received from ours." — Pope Innocent III and Lateran Council IV (A.D. 1215)
Therefore, if anyone says that it is not by the institution of Christ the lord himself (that is to say, by divine law) that blessed Peter should have perpetual successors in the primacy over the whole Church; or that the Roman Pontiff is not the successor of blessed Peter in this primacy: let him be anathema. — Vatican 1, Ses. 4, Cp. 1
Which begs the questions:
1. Is perpetual infallibility essential for discerning, understanding and preserving faith? And for providing assurance of faith?
2. Who was promised perpetual infallibility in interpreting Scripture?
3. How do you know this for sure?
4. How many texts of Scripture has your church infallibly interpreted?
5. Are Protestants excluded from ever correctly interpreting a part of Scripture without error?
When you can and will answer these then get back to us.