On a deeper level, and not considered by all Protestants, but certainly by some, it has to do with the concept of time and the Incarnation. Protestant “time”, in a religious sense, is more linear than it is in Catholic consciousness. To many Protestants, time is a straight line, and the whole sacrifice of Calvary is over. To Catholics, it is from eternity into eternity. It is never over, because in God, there is no “time.” The Catholic notion deepens the pathos of the Passion, because one thinks, then, of a God who delivered Himself to an eternal sacrifice, rather than one that happened, then ended.
This has nothing to do with a deep state of conscience, this sounds like some Yoga or buddism, and such. The sacrificed happend in time, Once. The Bible clearly states this. The result, which is eternal life for those who believe, are eternal. The event itself is not one big infinite event that is happening and happening. Plus you are fooling yourself into thinking you understand eternity. No man can. God told us already that sacrifiec happened once, for all time. Not happening once over and over.
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John 19: 30
30 So when Jesus had received the sour wine, He said, “It is finished!” And bowing His head, He gave up His spirit.
Hebrews 9
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. To those who eagerly wait for Him He will appear a second time, apart from sin, for salvation.
Hebrews 10
11 And every priest stands ministering daily and offering repeatedly the same sacrifices, which can never take away sins. 12 But this Man, after He had offered one sacrifice for sins forever, sat down at the right hand of God, 13 from that time waiting till His enemies are made His footstool. 14 For by one offering He has perfected forever those who are being sanctified.
15 But the Holy Spirit also witnesses to us; for after He had said before,
16 “This is the covenant that I will make with them after those days, says the LORD: I will put My laws into their hearts, and in their minds I will write them,” 17 then He adds, “Their sins and their lawless deeds I will remember no more.” 18 Now where there is remission of these, there is no longer an offering for sin.
Romans 6:
. 7 For he who has died has been freed from sin. 8 Now if we died with Christ, we believe that we shall also live with Him, 9 knowing that Christ, having been raised from the dead, dies no more. Death no longer has dominion over Him. 10 For the death that He died, He died to sin once for all; but the life that He lives, He lives to God. 11 Likewise you also, reckon yourselves to be dead indeed to sin, but alive to God in Christ Jesus our Lord.
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There is no more offering for sin
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Hebrews 10
26 For if we sin willfully after we have received the knowledge of the truth, there no longer remains a sacrifice for sins, 27 but a certain fearful expectation of judgment, and fiery indignation which will devour the adversaries. **
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