Psalm 136:17 to him who struck down great kings, His love endures for ever.
We can look back through our Old Testament and wonder how God could allow things to happen; but in order to understand why, we have to find out the reasons behind the stories.
God gave people plenty of warnings and explained the consequences if they continued to do things wrong... Mankind chose to continue to do things wrong!
Natural disasters happen to everyone; but people disobeying God constantly are inviting more to happen to themselves!