The Lord coming in the clouds and the rapture:

There are those that say the Lord only comes once in the clouds. At the rapture. Then they say tha "everyone" will see Him when He comes for His believers. I say He comes as a thief at the rapture and that the world does not see Him at that time. Please correct me if I am wrong with King James Bible verses. I also say that He comes in the clouds when He comes to reign over the thousand years on earth and then eveyone will see Him for their hearts will be pierced. If I am wrong then I must apologize and correct myself. I surely don't want to lead anyone incorrectly. God forbid. My first time here. Thanking you in advance for whatever help you may give. Grandma Dorothy