Jesus said that just before the 7 year Tribulation begins, one of the many signs of His nearness will be "earthquakes" in various places.
He called them "birth pangs". (Math.24:7,8).
Their obvious effects & increase of occurances will be clear signals as to the nearness of Christ's return & of the beginning of the 7 year Tribulation period.
Psalm 104:32
"God looks at the earth, & it trembles..."
Psalm 18:7
"Then the earth shook & trembled, the foundation of the hills also quaked & were shaken, because God was angry."
Isaiah 24:20
"The earth shall reel to & from like a drunkard, & totter like a hut; its transgression shall be heavy on it, & it will fall, & not rise again."
Isaiah 29:6
"You shall be punished by the Lord of hosts with thunder & earthquake & great noise, with storm & tempest & the flame of devouring fire."
