"I considered the horns, and, behold, there came up among them another little horn, before whom there were three of the first horns plucked up by the roots: and, behold, in this horn were eyes like the eyes of man, and a mouth speaking great things. Daniel 7:8, 20

The leader and spokesman for the Roman Catholic church is called the "Pope". The governing body of the church is called the "Holy See."

Blasphemy has two definitions in Scripture:

1. Claiming to forgive sins (Luke 5:21).
2. Claiming to be God (John 10:33).

Let's first look at the evidence for it claiming to forgive sins: "Does the Priest truly forgive the sins, or does he only declare that they are remitted? The Priest does really and truly forgive the sins in virtue of the power given to him by Christ." 1 The papacy further undermines Jesus by setting up a system of confession to an earthly priest, thus bypassing Jesus, our High Priest (Hebrews 3:1; 8:1, 2) and only Mediator (1 Timothy 2:5).

Next consider the evidence for it claiming to be God: "We [the popes] hold upon this earth the place of God Almighty." 2 Here is another: "The pope is not only the representative of Jesus Christ, but he is Jesus Christ, Himself, hidden under the veil of flesh." 3

It's obvious this point, likewise, fits the papacy.

1 Joseph Deharbe, S.J., A Complete Catechism of the Catholic Religion (New York: Schwartz, Kirwin & Fauss, 1924), p. 279.
2 Pope Leo XIII, Encyclical Letter "The Reunion of Christendom" (dated June 20, 1894) trans. in the Great Encyclical Letters of Pope Leo XIII (New York: Benziger, 1903), p. 304.
3 Catholic National, July 1895.