How do Christians justify worshiping someone who kills naive children/innocent beings?

For example, in the Old Testament, Jehovah sends two bears to maul 42 children to death when some of them mocked one of his followers: *" And he went up from thence to Bethel: and as he was going up by the way, little boys came out of the city and mocked him, saying: Go up, thou bald head; go up, thou bald head. And looking back, he saw them, and cursed them in the name of the Lord: and there came forth two bears out of the forest, and tore of them two and forty boys. And from thence he went to mount Carmel, and from thence he returned to Samaria."[4 Kings (2 Kings) 2:23-25]* In the New Testament, Jesus kills a fig tree for not being ready to feed him yet: *"12 The next day as they were leaving Bethany, Jesus was hungry. 13 Seeing in the distance a fig tree in leaf, he went to find out if it had any fruit. When he reached it, he found nothing but leaves, because it was not the season for figs. 14 Then he said to the tree, “May no one ever eat fruit from you again.” And his disciples heard him say it.* *20 In the morning, as they went along, they saw the fig tree withered from the roots.[Mark 11 12:14,20]* Even an uneducated child would know that trees only grow fruits at certain times of a year. But Jesus was provoked to curse and effectively kill it. I know this will get downvoted by many Christians, doesn't matter. Hate is hate, senseless killing is senseless killing.