"The unbelievers are like beasts which, call out to them as one may, can hear nothing but a shout and a cry. Deaf, dumb, and blind, they understand nothing" (2:172).
"The devils will teach their votaries to argue with you. If you obey them you shall yourselves become idolaters. . . . God will humiliate the transgressors and mete out to them a grievous punishment for their scheming" (6:121–25).
"[T]heir hearts were hardened, and Satan made their deeds seem fair to them. And when they had clean forgotten Our admonition We granted them all that they desired; but just as they were rejoicing in what they were given, We suddenly smote them and they were plunged into utter despair. Thus were the evil-doers annihilated. Praise be to God, Lord of the Universe!" (6:43–45).
"We had made them more powerful in the land than yourselves [the Meccans], sent down for them abundant water from the sky and gave them rivers that rolled at their feet. Yet because they sinned We destroyed them all and raised up other generations after them. If We sent down to you a Book inscribed on real parchment and they touched it with their own hands, the unbelievers would still assert: ‘This is but plain sorcery.' They ask: ‘Why has no angel been sent down to him [Muhammad]?' If We had sent down an angel, their fate would have been sealed and they would have never been reprieved" (6:5–8).
"Those that deny Our revelation We will burn in fire. No sooner will their skins be consumed than We shall give them other skins, so that they may truly taste the scourge. God is mighty and wise" (4:55–56).
"Believers, if you yield to the infidels they will drag you back to unbelief and you will return headlong to perdition. . . .We will put terror into the hearts of the unbelievers. . . . The Fire shall be their home" (3:149-51).
There are two reasons why people are offended by these verses. One, if someone is really offensive, rude, disgusting, blasphemous, profane, etc.
The second is for the reason quoted in the passage of scripture. They are guilty, and the truth is not comfortable to hear. But instead of taking the truth and learning and repenting, they get angry so they don't have to hear the truth.
Muslims don't apologize for the truth, either.