Heb 9:28, speaking of Christ, says "... and the second time he appears..."
How can Christ APPEAR a second time if he will not have a visible return to earth?
Where are you getting that He will not have have a visible return to earth? You've either misunderstood or been misinformed. Read the book of Revelation; it's very enlightening.
Well they just believe what ever the watchtower tells them. Please don't confuse them with facts... or tell them this scripture
Rev 1:7 KJV Behold, he cometh with clouds; and every eye shall see him, and they also which pierced him: and all kindreds of the earth shall wail because of him. Even so, Amen.
Scriptures should never be understood in isolation. One must take the context of the entire Bible before one can learn what any particular scripture means.
1) Jesus "comes with the clouds." Just as the sun is invisible to the eye, yet it can still be "seen," or discerned, Jesus comes with the clouds.
This view is supported by Scripture:
“Then the sign of the Son of man will appear in heaven, and then all the tribes of the earth will beat themselves in lamentation, and they will see the Son of man coming on the clouds of heaven with power and great glory.” - Matthew 24:30
“Look! He is coming with the clouds, and every eye will see him." - Revelation 1:7
“A little longer and the world will behold me no more.” - John 14:19
2) In the Scriptures, to "see" something can mean, not to physically see it, but to discern it. This also is supported by Scripture:
"For his invisible qualities are clearly seen from the world’s creation onward, because they are perceived by the things made." Romans 1:20
What is meant by his coming on the clouds and every eye seeing him?
Rev. 1:7: Look! He is coming with the clouds, and every eye will see him, and those who pierced him; and all the tribes of the earth will beat themselves in grief because of him. (Also Matthew 24:30; Mark 13:26; Luke 21:27)
What is indicated by clouds? Invisibility. Example, When an airplane is in a thick cloud or above the clouds, people on the ground usually cannot see it, although they may hear the roar of the engines. Jehovah told Moses: I am coming to you in a dark cloud. Moses did not see God, but that cloud indicated Jehovah’s invisible presence. (Ex. 19:9; see also Leviticus 16:2; Numbers 11:25.)
If Christ were to appear visibly in the heavens, it is obvious that not every eye would see him. If he appeared over Australia, for example, he would not be visible in Europe, Africa, and the Americas, would he?
In what sense will every eye see hi’? They will discern from events on earth that he is invisibly present. Also referring to sight that is not physical, John 9:41 reports: Jesus said to the Pharisees: If you were blind, you would have no sin. But now you say, We see. Your sin remains. (Compare Romans 1:20.) Following Christ’s return, some persons show faith; they recognize the sign of his presence. Others reject the evidence, but when Christ goes into action as God’s executioner of the wicked, even they will discern from the manifestation of his power that the destruction is not from men but from heaven. They will know what is happening because they were warned in advance. Because of what is overtaking them, they will beat themselves in grief.
Who are those who pierced him? Literally, Roman soldiers did this at the time of Jesus’ execution. But they have long been dead. So this mut refer to people who similarly mistreat, or pierce, Christ’s true followers during the last days. Matt. 25:40,*45.
When Jesus ascended into heaven, according to the record, a cloud caught him up from their vision. (Ac 1:9) The disciples did not see Jesus riding away on a cloud, but rather, the cloud obscured their vision of him. This helps us to understand Jesus’ words concerning his presence: They will see the Son of man coming in a cloud with power and great glory, and Revelation’s statement: He is coming with the clouds, and every eye will see him. (Lu 21:27; Mt 24:30; Re 1:7) In past cases clouds represented invisible presence; but observers could see the meaning with their mental eyes. In this case the physical occurrences that are visible would cause the one looking to see or realize that Christ is invisibly present. See also Mt 24; Mr 13; Re 14:14.