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I still have many things to say to you, but you cannot bear them now. – John 16:12
But Jesus on his part did not entrust himself to them, because he knew all people. – John 2:24
A fool takes no pleasure in understanding, but only in expressing his opinion. – Proverbs 18:2
Yes, Jesus said hard things to people, but He calculated His words when He could not avoid the hard stuff. I’m not saying you should not share hard thoughts, but I am saying that how and why you tell the problematic truth needs God-centered consideration.
And he began to teach them that the Son of Man must suffer many things and be rejected by the elders and the chief priests and the scribes and be killed, and after three days rise again. And he said this plainly. And Peter took him aside and began to rebuke him. – Mark 8:31-32
Paul was a unique historical figure who wrote with a strong hand, but his heart of compassion was evident to all.
For they say, “His letters are weighty and strong, but his bodily presence is weak, and his speech of no account.” – 2 Corinthians 10:10
And count the patience of our Lord as salvation, just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures. – 2 Peter 3:15-16
Luther was a unique historical figure, who from what we know, he could be harsh, brash, and even crude person.