'Serious' in the Bible

The LORD also said, "How great is the disapproval of Sodom and Gomorrah! Their sin is so very serious!

It's actually in my power to do some serious evil to you, but last night the God of your father told me, "Be careful what you say to Jacob whether good or evil.'

But Jephthah replied to them, "My army and I were engaged in a serious fight with the Ammonites. I called for you, but you didn't deliver me from their control.

By doing this, the sin of the young men was very serious in the LORD's sight because the men despised the LORD's offering.

And as for you, you will suffer from a serious disease of your bowels. Eventually, day-by-day you will excrete your own bowels because of this disease."