I will explain it to you and perhaps you might see to make a big difference from the literal rendition of it.
2Ki 2:23 And he went up from thence unto Bethel: and as he was going up by the way, there came forth little children out of the city, and mocked him, and said unto him, Go up, thou bald head; go up, thou bald head.
2Ki 2:24 And he turned back, and looked on them, and cursed them in the name of the LORD. And there came forth two she bears out of the wood, and tare forty and two children of them.
Are you even aware of who 'he' was? When the children were saying "Go up" they were telling him to ascend to heaven, same as his father did just before this event. That is what they were mocking him about. Even if he knew his father was with God it was well within the full month allowed for grieving a 'missing from the living' parent.
Why 'she' bears and not 'he' bears, and why only 42 instead of all the children that were there?Two she bears and 42 children represent two 42 month periods equal to 3-1/2 years each doubled is 7 years, or the 7-day creation period.
Creation only took 6 full days,
Ge:1:31:
And God saw every thing that he had made,
and,
behold,
it was very good.
And the evening and the morning were the sixth day.