The penalty for doing this is unimageable...

"the same shall drink of the wine of the wrath of God, which is poured out unmixed into the cup of His indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb." Rev 14:10

The Spectator.co.uk is wrong. Infallibility can be invoked by doctrines of DIVINE AND CATHOLIC FAITH.

5. The first paragraph states: "With firm faith, I also believe everything contained in the word of God, whether written or handed down in Tradition, which the Church, either by a solemn judgement or by the ordinary and universal Magisterium, sets forth to be believed as divinely revealed". The object taught in this paragraph is constituted by all those doctrines of divine and catholic faith which the Church proposes as divinely and formally revealed and, as such, as irreformable.11

Ex cathedra is used for doctrines that are not in the Bible such as the Marian dogmas.

This poem is a truthful expression of immense pain due to the innocent unborn binging sent to the garbage dump along with the Immaculate Heart. Truly they are the ones whose love is actually hate. I admire your expression of tragedy and grief.

There is only one "unthinkable" sin in the Bible. There is only one kind of sin that is so evil, so wicked, and so unbelievably horrific that the Bible says it never even entered into the mind of God... child sacrifice which is todays abortion.

“And they have built the high places of Topheth, which is in the Valley of the Son of Hinnom, to burn their sons and their daughters in the fire, which I did not command, nor did it come into my mind." (Jeremiah 7:30-31 repeated 3 times for emphasis).