Correct. The sheep need to be warned about the wolves. There is real spiritual danger in the errors of Catholicism. This is not about those who have been deceived but the deceivers. Indeed Catholics are told to come out of their church, which is a part of Mystery Babylon.
The Catechism of the Catholic Church (CCC) teaches its adherents that the god of the Muslims -- Allah -- is the God of Abraham, Isaac, and Jacob -- the one true God of Christians (Father, Son, and Holy Spirit). THIS IS SERIOUS DECEPTION.
"841 The Church's relationship with the Muslims. "The plan of salvation also includes those who acknowledge the Creator, in the first place amongst whom are the Muslims; these profess to hold the faith of Abraham, and together with us they adore the one, merciful God, mankind's judge on the last day'
There are four clear errors in this paragraph:
1. Muslims are included in God's plan of salvation. The truth is that only those who obey the Gospel are included in God's plan of salvation. Muslims must turn to Christ as Lord an Saviour in order to be saved. Which means they must repudiate Islam.
2. Muslims profess to hold the faith of Abraham. The truth is that Abraham did not worship Allah but the LORD God Almighty. Yahweh (the LORD) is also the name of Christ, who said to Moses that He was the God of Abraham, Isaac, and Jacob, whose name was I AM THAT I AM (or I AM). He told the Jews of His day that He was "I AM" and if they did not believe this they would die in their sins.
3. Muslims adore the one merciful God. The truth is that Muslims worship the moon god Allah, and Allah condemns the triune Godhead in the Quran. The Quran attacks and rejects the Holy Trinity, the deity of Christ, and the crucifixion and resurrection of Christ.
4. Muslims worship mankind's judge on the last day. The Bible tells us that it is Christ who is mankind's Judge (Acts 17:30,31), but Muslims regard Jesus as merely a prophet, and one who is inferior to Mohammad.
Now Pope Francis has been calling Muslims "brothers" over and over again in his public declarations. But they cannot be "brothers" of Christians, since they regard Christians and Jews as infidels who will be consigned to Hell. Now if this is not a grand deception, we do not know the meaning of deception.