When Christ comes a second time is here in Hebrews 9, we still are waiting for that return.
23 Therefore
it was necessary that the copies of the things in the heavens should be [
j]purified with these, but the heavenly things themselves with better sacrifices than these. 24 For Christ has not entered the holy places made with hands,
which are [
k]copies of the true, but into heaven itself, now to appear in the presence of God for us; 25 not that He should offer Himself often, as the high priest enters the Most Holy Place every year with blood of another— 26 He then would have had to suffer often since the foundation of the world; but now, once at the end of the ages, He has appeared to put away sin by the sacrifice of Himself. 27 And as it is appointed for men to die once, but after this the judgment, 28 so Christ was offered once to bear the sins of many. T
o those who eagerly wait for Him He will appear a second time, apart from sin, for salvation.
v26 'has appeared once at the end of the ages to put away sin by the sacrifice of Himself.
That was His first advent, crucifixion death and resurrection. The Gospel by which you stand in the faith.
We eagerly await His second appearing apart from sin for salvation.
His second appearing mean our deliverance from this present evil age in which we find ourselves.
It is our salvation from that spoken here. And this evil age is still with us today.
When Christ returns again it will not be for sin as in to forgive people their sins, it will be for a fiery judgement of the wicked, evil rulers and people of this age. Believer's sins, Christ has already put away by His sacrifice for them.
His returning is our salvation.
spoken of also in 1 Peter 1
3 Blessed
be the God and Father of our Lord Jesus Christ, who according to His abundant mercy has begotten us again to a living hope through the resurrection of Jesus Christ from the dead, 4 to an inheritance [
b]incorruptible and undefiled and that does not fade away, reserved in heaven for you, 5
who are kept by the power of God through faith for salvation ready to be revealed in the last time.
6 In this you greatly rejoice, though now for a little while, if need be, you have been [
c]grieved by various trials, 7 that the genuineness of your faith,
being much more precious than gold that perishes, though it is tested by fire, may be found to praise, honor, and glory at the revelation of Jesus Christ, 8 whom having not [
d]seen you love. Though now you do not see
Him, yet believing, you rejoice with joy inexpressible and full of glory, 9 receiving the end of your faith—the salvation of
your souls.
His return will be an amazing thing for believers, and every eye will see Him returning, even those who pierced Him.
Even the dead in hell will be witness to it.
Rev 1
4 John, to the seven churches which are in Asia:
Grace to you and peace from Him who is and who was and who is to come, and from the seven Spirits who are before His throne, 5 and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler over the kings of the earth.
To Him who [
b]loved us and washed us from our sins in His own blood, 6 and has made us [
c]kings and priests to His God and Father, to Him
be glory and dominion forever and ever. Amen.
7 Behold, He is coming with clouds, and every eye will see Him, even they who pierced Him. And all the tribes of the earth will mourn because of Him. Even so, Amen.
8
“I am the Alpha and the Omega, [d]the Beginning and the End,” says the [e]Lord, “who is and who was and who is to come, the Almighty.”
Christ here points this out, saying 'who is to come', that is to come again that second time, here in 2 Thess 1
God’s Final Judgment and Glory
3 We are bound to thank God always for you, brethren, as it is fitting, because your faith grows exceedingly, and the love of every one of you all abounds toward each other, 4 so that we ourselves boast of you among the churches of God for your patience and faith in all your persecutions and [
a]tribulations that you endure, 5
which is manifest[
b] evidence of the righteous judgment of God, that you may be counted worthy of the kingdom of God, for which you also suffer; 6 since
it is a righteous thing with God to repay with [
c]tribulation those who trouble you, 7 and to
give you who are troubled rest with us when the Lord Jesus is revealed from heaven with His mighty angels, 8 in flaming fire taking vengeance on those who do not know God, and on those who do not obey the gospel of our Lord Jesus Christ. 9 These shall be punished with everlasting destruction from the presence of the Lord and from the glory of His power, 10 when He comes, in that Day, to be glorified in His saints and to be admired among all those who [
d]believe, because our testimony among you was believed.
11 Therefore we also pray always for you that our God would count you worthy of
this calling, and fulfill all the good pleasure of
His goodness and the work of faith with power, 12 that the name of our Lord Jesus Christ may be glorified in you, and you in Him, according to the grace of our God and the Lord Jesus Christ.