What I think you mean is you have to work hard not to sin, because in your thinking, if you sin (and especially if it’s mortal sin), you lose your “salvation” and are on your way to hell if you don’t get to the priest in time to confess and get absolution. Since you have no security, least of which “eternal security,” you are “in” a state of “grace” or “out” of it, depending on your sinning and confessing. In one minute, out the next. Back in, back out. So you can be “saved” and lost again and saved again, millions of times before you ever die and face the judgment. Then it is only your hope that the LAST state, at death, is IN and not OUT. And you think that is scriptural and the truth???
And to top it all off, you think your works will keep you IN or lessen your chances of being OUT at death.
a very primitive understanding at best
I hope that someone responds to your first request. I will later for I do not have the time right now.
To your last sentence, what do you think of Jesus’ words when He says, "When the Son of Man comes in his glory, and all the angels with him, he will sit on his throne in heavenly glory. All the nations will be gathered before him, and he will separate the people one from another as a shepherd separates the sheep from the goats. He will put the sheep on his right and the goats on his left.
"Then the King will say to those on his right, ‘Come, you who are blessed by my Father; take your inheritance, the kingdom prepared for you since the creation of the world. For I was hungry and you gave me something to eat, I was thirsty and you gave me something to drink, I was a stranger and you invited me in, I needed clothes and you clothed me, I was sick and you looked after me, I was in prison and you came to visit me.’
"Then the righteous will answer him, ‘Lord, when did we see you hungry and feed you, or thirsty and give you something to drink? When did we see you a stranger and invite you in, or needing clothes and clothe you? When did we see you sick or in prison and go to visit you?’
"The King will reply, ‘I tell you the truth, whatever you did for one of the least of these brothers of mine, you did for me.’
"Then he will say to those on his left, ‘Depart from me, you who are cursed, into the eternal fire prepared for the devil and his angels. For I was hungry and you gave me nothing to eat, I was thirsty and you gave me nothing to drink, I was a stranger and you did not invite me in, I needed clothes and you did not clothe me, I was sick and in prison and you did not look after me.’
"They also will answer, ‘Lord, when did we see you hungry or thirsty or a stranger or needing clothes or sick or in prison, and did not help you?’
"He will reply, ‘I tell you the truth, whatever you did not do for one of the least of these, you did not do for me.’
“Then they will go away to eternal punishment, but the righteous to eternal life.”