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Sink holes:
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We keep our eyes on these things because they are objective evidence of something approaching earth from above. Did we have sinkholes and fireballs in the news every single day even 2 years ago? No. Now we do and they are all over the world. Something is happening to the entire world, just like something is happening to the sun and moon and the other planets in our solar system. That 'something' is being caused by a some external force-likely a celestial body.
People can argue all day about what is or is not causing these things on the earth. What they cannot argue with is the proof positive that something is coming from above to destroy and cause havoc on the earth. Read Revelation 6, seal 6 and all of Revelation 8 for the details. That is whats coming and it is guaranteed to happen.
Should we worry? No:
Psalm 32 Therefore let all the faithful pray to you
while you may be found;
surely the rising of the mighty waters
will not reach them.
7You are my hiding place;
you will protect me from trouble
and surround me with songs of deliverance.
Be watching and ready for the presence of the Lord.
grace and peace