How does this threat differ from that of other religions? How does one choose between Transgressive Sacrality and your threats?
Would you consider those who direct you toward the ONLY life boats available to escape a sinking ship to be "threatening" you?
Once again. The Gospel message in the Bible is either the truth or it is a lie.
If it is truth, then the words are merciful....far from being "threats".
And of course anything less than warning people of the dire consequences of unbelief would be unconscionable for a God of mercy.