Yes, this is correct. The ten (or two depending on how you look at it) commandments aren't the ONLY sin you can do, but it's a good guide. However you don't get "un-saved" by not following them. You just get more grace. If we confess our sins, he will forgive us.
We confessed our sin when we first received Christ. After that there is
no more sin, as scripture confirms.
We
"cannot sin" 1John 3:9.
We've
"ceased from sin" 1Pet 4:1.
We're
"freed from sin" John 8:36, Rom 6:7,
Who shall lay anything (even sin)
to the charge of God's elect? It is God who justifies", Rom 8:33.
But the doctrine you follow contradicts scripture and says that immediately after we're washed by the blood, we're dirty with sin again. And you also say that Christians are unrighteous due to their failure to obey the law perfectly.
Believing isn't Jesus in itself isn't saves you. (Demons know who Jesus is) Believing in Jesus is what gives you the power to overcome sin, to love others, and live you life for his purpose.
And Christians
have overcome on the day we first believed on Jesus. The
thief on the cross was an overcomer.
But you contradict scripture and claim that we have not overcome until we attain some ambiguous and unknowable, minimum standard of obedience to the law.
Does the Bible say....
Love God?
Love your neighbors?
Confess your sins?
Feed the hungry?
Clothe the poor?
Pray for one another?
Visit orphans and widows and those who are in prison?
Don't murder?
Don't steal?
Don't lie?
Pray for your enemies?
Go forth unto all the word and preach the Gospel?
Bear good fruit?
Show compassion and forgiveness for other people?
...or should we just ignore all of these other things the Bible tells us to do?
Why would you assume most of the above is not believing in Jesus?
We forgive one another just as God forgave us when we believed on Jesus. We show grace/love to one another just as God showed His grace/love towards us.
Christians bear good fruit which is Christ the firstfruits 1Cor 15:20.
We love God and have submitted to His righteousness when we believe on Jesus.
We confessed our sins when we first received Christ. After that there is
no more sin, as scripture confirms.
Feeding the hungry, clothing the naked and visiting those in person is all about believing on Jesus such that you will let your light shine, sharing the gospel of Christ to the spiritually hungry, naked, in prison, etc. Here you are referring to Matt 25 where the sheep and goats are separated. But you err in reading this in purely physical terms. And consider that there are even non-believers who feed the hungry, cloth the naked, etc. Are you saying they are saved based on their behavior in spite of their rejecting the gospel of Christ?
Regarding Matt 25 on feeding the hungry, clothing the naked, etc, we should not see this in purely physical terms. Whilst helping the needy is good, even the non-believers can do that. For Christians we go further by
spiritually feeding the hungry, clothing the naked, visiting those in prison, etc.
Remember, scripture is
spiritually discerned, 1Cor 2:14.
Consider how God describes terms as found in Matt 25.
What is the
spiritual food/drink that mankind is in need of?
1Cor 10:3,4
And did all eat the same spiritual meat; And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.
Who are those in
spiritual prison but those who are without Christ.
Isa 61:1
The Spirit of the Lord God is upon me; because the Lord hath anointed me to preach good tidings unto the meek; he hath sent me to bind up the brokenhearted, to proclaim liberty to the captives, and the opening of the prison to them that are bound;
And what is the state of mankind without Christ?
It's sick, and needing to hear the gospel of Christ.
Isa 1:5,6
Why should ye be stricken any more? ye will revolt more and more: the whole head is sick, and the whole heart faint.From the sole of the foot even unto the head there is no soundness in it; but wounds, and bruises, and putrifying sores: they have not been closed, neither bound up, neither mollified with ointment.
How are the spiritually naked clothed?
Isa 61:10
I will greatly rejoice in the Lord, My soul shall be joyful in my God; For He has clothed me with the garments of salvation, He has covered me with the robe of righteousness,
And those without Christ are strangers who need to hear the gospel to be taken into God's kingdom.
Eph 2:12
that at that time you were without Christ, being aliens from the commonwealth of Israel and strangers from the covenants of promise, having no hope and without God in the world.
When we share the gospel of Christ we offer to take in the lost so that they may no longer be strangers.
Eph 2:19
Now, therefore, you are no longer strangers and foreigners, but fellow citizens with the saints and members of the household of God,
So we see scripture speaking in
spiritual terms regarding preaching the gospel of grace. And doing the
works of believing in Jesus (John 6:29) Christians also let their light shine preaching the gospel of Christ to spiritually feed, clothe, heal and set free, the lost.
Matt 5:14-16
Ye are the light of the world. A city that is set on an hill cannot be hid.
Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house.
Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.
Remember,
God's will is that we
believe on Jesus. And if we love others we will let our light shine by sharing the gospel with them, so that they too can be spiritually healed, clothed, feed and set free from prison.