My first choice would be Jesus Christ, because I’m a Christian. However, if not Jesus and someone else (I know the Plinky Prompt didn’t ask that specifically) then who to choose?
I would probably have to say John Calvin, the Protestant Reformer. Why? I admire Calvin greatly – not that I agree with him on everything. He was a strong believer who was used much of God in Geneva. For someone who followed the Lord and his rock solid faith rooted firmly in the Scriptures, it has to be Calvin.