The cleansing of the Temple isn't evidence that Jesus objected to combining spiritual with temporal power. Jesus didn't object to the existence of the Temple, he objected to its' corruption by the presence of the merchants and moneychangers. He was still traveling to Jerusalem and to the Temple, and he referred to it as "my Father's house." He was a Jew preaching to Jews and claiming to be the messiah of the Jews. All of that presupposes the legitimacy of the extant temporal Jewish hierarchy and the Temple itself as a holy site. By my reading, Jesus wasn't an anarchist, he was a reformist.
Also Matthew 16:18, where Jesus declares Peter as "the rock" upon which his church shall be built, is well known. You can find more information here: https://en.wikipedia.org/wiki/Primacy_of_Peter
Although personally I would claim the modern church owes more to Paul (for better or worse) than Peter.
https://en.wikipedia.org/wiki/Cleansing_of_the_Temple doesn't seem to me to be the act of someone who is in favour of combining spiritual with temporal power, and https://en.wikipedia.org/wiki/Christianity_in_the_1st_centur... looks like a muddle from here.