Here is an argument which I don't think I've ever used before:
If Christ being in us, is the "Second Coming," why did John write extensively about it in the Book of Revelation.......................if Christians - including him - already have Christ in them?
You're saying, we should throw away the Book of Revelation?
"Second Coming" is an invented phrase. Doing a search it shows up "0" times, but doing a search on "second time" this comes up:
(Heb 9:28) So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
Keep reading into the 10th chapter as it gets very interesting.
(Heb 10:9) Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
(Heb 10:10) By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
(Heb 10:11) And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
(Heb 10:12) But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
(Heb 10:16) This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
(Heb 10:17) And their sins and iniquities will I remember no more.
(Jer 31:33) But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
(Jer 31:34) And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
1st Covenant
2nd Covenant
1st Coming--a sacrifice for sin
2nd Time---without sin unto salvation
Jesus' return a second time is through and by God's Spirit with great power and glory to put His law in our inward parts and on our hearts, not like the first.
(Heb 10:15) Whereof the Holy Ghost also is a witness to us: for after that he had said before,
(Rom 8:15) For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
(Rom 8:16) The Spirit itself beareth witness with our spirit, that we are the children of God: