Hebrews

So Christ was offered to bear the sins of many; and to them that look for Him shall He appear the second time without sin to salvation. (Heb 9:28).

Christ’s appearing mentioned in Heb 9:28 refers to Pentecost. The context is about the Old Testament high priest who went into the holy of holies once a year to offer blood for sin. The worshippers remained outside waiting for the priest’s return. If he returned it was a token that the blood had been accepted, that the worshipper’s sins were forgiven. This meant they were “saved”, at least for a year, when blood would have to be offered again.

Heb 9:28 says that in the same way Christ appears the second time without sin. This is His coming out of heaven (the true holy of holies) after the blood was accepted, to announce the Covenant is accepted. This is what happened on the Day of Pentecost, when the Holy Spirit was sent to consummate our salvation and was given to all who believe (look for Him). Pentecost is the evidence of the acceptance by God of Christ’s atonement for us and therefore of our salvation.

Hebrews does not speak of the Second Coming. Heb 10:25 tells us not to forsake the assembling of ourselves, but to exhort one another, especially as we see the day approaching. This day is not the Second Coming. It is mentioned later in the chapter, in verse 37, in reference to Habakkuk, who said it was the day of God’s vindication. This exhorting one another while the day of salvation remains is also mentioned in Heb 3:13.