It's not that difficult to reconcile. Everyone has sinned in their life BEFORE coming to Christ. Romans 3, and Isaiah 53:6 is talking about our PAST LIFE before becoming a believer. 1 John 1:8 is a warning to the brethren against the false gnostic heresy that says that we cannot deny sin's existence. Christian Scientists deny the existence of sin and thus 1 John 1:8 would be a warning to them in not to think this way. Eternal Security Proponents and or Non-OSAS Sin and Still Be Saved Type Believers (Free Will Baptists) believe that Jesus paid for present and future unconfessed sins. They believe sin exists physically, but they deny sin exists for them on a spiritual level because Jesus paid for their present and future sins by their having a belief alone on Him for salvation or in the finished work of Christ, etc.; So 1 John 1:8 would be a warning to them, as well.
At this point, many in your camp will bring up Romans 7:14-24. But in Romans 7:14-24, Paul is sharing his experience from his past life as a Pharisee in trying to be justified by the Old Law (the 613 Laws of Moses) without God's grace and he is not speaking as a Christian. The Old Law (as a whole) is no longer in effect. So when Saul (Paul) sought to overcome sin as a Pharisee under this false belief system, he obviously was a slave to his sin. But Paul later says in Romans 13:14 says to put on the Lord Jesus Christ and fulfill not the lusts of the flesh. So unless Paul has a split personality, he is speaking from two different perspectives or beliefs.
Believers like Job, Zacharias, Elisabeth, and the 144,000 were able to be blameless in the sense of their life either AFTER they came to Christ or within a certain period of lenght of time as a believer up until the present moment (that it was written that they were blameless).
This is true. Jesus is the only One who lived an entirely sinless life. But that does not mean a believer cannot overcome mortal sin by the power of the Lord working through them. Jesus came to forgive us of our past sins, and reconcile us to God, and give us a new heart, and to put the Holy Spirit inside of us, and to give us a new and more perfect way in following God (with the New Testament commandments). His followers helped to flesh out what Jesus taught, and they (by the leading of the Spirit) added even more NT commands in following the Lord.
We are all initially and foundationally saved by God's grace through faith in the Messiah. Those in the OT did not know who Jesus was, but they looked ahead to a future Messiah who was going to one day redeem them. In the OT, they had to make sacrifices in order to temporarily absolve sin. But they had to keep revisiting the same PAST sins year after year with a priest. They sought forgiveness with the Lord in the same way we do (by going to Him in prayer), but they simply did not know the name of the Lord (i.e. Jesus). The OT system was not a system of salvation by Works Alone (without God's grace). They were saved by grace through faith, too (Albeit, a little differently back then because the forgiveness was only temporary by the animal sacrifices until Christ came). The blood of goats and bulls could never permanently take away sin. But a true faith always is followed by the “work of faith” (1 Thessalonians 1:3) (2 Thessalonians 1:11) (Hebrews 11), otherwise it is a dead faith that cannot save (James 2:17-18); For we are justified by works and not by faith alone (James 2:24).
Ephesians 2:8-9, Romans 4:3-5, and Titus 3:5 are all talking about the initial and foundational aspect of salvation (Which is first being saved by God's grace without the deeds of the Law). This then leads to the second aspect of the salvation process called “Sanctification” (Which is holy living by God's power working in us) (2 Thessalonians 2:13, Romans 8:13, Hebrews 5:9, James 2:24). Verses like Ephesians 2:8-9, Romans 4:3-5, and Titus 3:5 are referring to how we are not saved by “Works Alone Salvationism” without God's grace. But many twist Paul's words to their own destruction, and justify some kind of sin and still be saved type belief.
Your adding to the Bible and ignoring what it says. Reading the entire passage in context we see below that they were blameless in regards to their holy conduct because they were not defiled with women, they followed the Lamb (Jesus) wherever he directed them, and there was no guile found in their mouths.
For Revelation 14:3-5 says,
“And they sung as it were a new song before the throne, and before the four beasts, and the elders: and no man could learn that song but the hundred and forty and four thousand, which were redeemed from the earth. These are they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb. And in their mouth was found no guile: for they are without fault before the throne of God.”
There is no mention in this above passage about how they were blameless because they trusted really well on the finished work of Christ. That would be your imagination working overtime and it would not be in harmony with what the text actually says.
Strange how you reject what the Bible says in regards Job, Zacharias, Elisabeth, and the 144,000 in favor of a doctrine that does not exist in the Holy Scriptures.
So you believe salvation is conditional? I did not get the impression that Baptists held to such a view (Unless they are Free Will Baptists). But even Free Will Baptists believe they can sin and still be saved. So the conditions they have for salvation is not all that much. Anyways, your point about how believers cannot stop sinning this side of Heaven is “
you talking” and not the Bible. Again, I would encourage you to slowly read Galatians 5:24, 1 Peter 4:1-2, and 2 Corinthians 7:1. Do you believe these verses at face value? Or do you seek to change them because you do not like what they say?