It means "change of mind", in a fancy term, "paradigm shift." What you described is more like "penance".
If you obey the two greatest commandments then you have fulfilled the rest, period.
I love how our filters protect us. We really, really, need to make "religion" old and new about personally obeying God's commands. We are exactly, in so many ways, were the first 700 years of God-Man relationship we claim to be wrong. It is all about our personal faith, obedience, conversion and trust in God, IF we believe right but our commitment to God's loving principles for a just society are "not our problem because we are saved and will soon leave the earth to Satan. 55 core prophets throughout Israel's history (including figures like Moses, Abraham, David, and Elijah), biblical scholars typically focus on the 3 Major Prophets and 12 Minor Prophets (The Twelve) when analyzing specific prophetic texts condemning societal corruption.
The entire prophetic context of the Hebrew bible is not about how we personally engage with God, but how we represent God's sovereignty and call to reform our society. We want it to be all about me. It is not. The prophets railed about economic and moral failings of the CULTURE we have created and support. Thus, we collectively must love our neighbor and treasurer social harmony with God's will. We Protestants want personal salvation without bringing salvation to the widows, orphans, the sick, the oppressed, the imprisoned and the outcast, because that is their problem, "I'm good because of what I believe." Too bad for you who see in us no love, forgiveness, reconciliation, economic justice, no living image of a loving God, not light to our communities.
Jesus made it clear, you can't love God if you don't love your neighbor. One branch of Christianity provides 221,144 preschools, primary schools, and secondary schools worldwide, enrolling more than 62.1 million students providing 6.7 million students are enrolled in post-secondary and university institutions globally. Provides 5,000 hospitals and 16,000 health clinics across the globe, providing essential medical care in remote and under-resourced regions. It runs approximately 10,000 orphanages and countless local shelters, food banks, and family-support centers managed by local communities. It serves as the official international humanitarian agency of the U.S and assists hundreds of millions of people annually across more than 90 countries focusing on emergency response, agriculture, health, and peacebuilding without proselytizing.
Protestant groups have historically spearheaded major social movements, including prison reform, labor rights, and the abolition of slavery (such as Quaker and Methodist anti-slavery campaigns) while the majority of southern Christianity was willing to kill 700,000 to protect human slavery because it was "biblical."
My point is that we will be judged not only about our theological claims of salvation with or without conversion. We will also be judged about our impact on the societies we inhabit and influence/control.
“Do not lay up for yourselves treasures on earth, where moth and rust destroy and where thieves break in and steal, but lay up for yourselves treasures in heaven, where neither moth nor rust destroys and where thieves do not break in and steal. For where your treasure is, there your heart will be also.
“No one can serve two masters, for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and money.
“Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. For the gate is narrow and the way is hard that leads to life, and those who find it are few.
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven. On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’
Whoever does not take his cross and follow me is not worthy of me. Whoever finds his life will lose it, and whoever loses his life for my sake will find it.
The Judgment: “When the Son of Man comes in his glory and all the angels with him, then he will sit on his glorious throne. 32All the nations will be assembled before him, and he will separate people one from another like 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, inherit the kingdom prepared for you from the foundation of the world. For I was hungry and you gave me food, I was thirsty and you gave me something to drink, I was a stranger and you invited me in, I was naked and you gave me clothing, I was sick and you took care of me, I was in prison and you visited 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 naked and clothe you? When did we see you sick or in prison and visit you?’ And the king will answer them, ‘I tell you the truth, just as you did it for one of the least of these brothers or sisters of mine, you did it for me.’
“Then he will say to those on his left, ‘Depart from me, you accursed, into the eternal fire that has been 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 receive me as a guest, naked and you did not clothe me, sick and in prison and you did not visit me.’ Then they too will answer, ‘Lord, when did we see you hungry or thirsty or a stranger or naked or sick or in prison, and did not give you whatever you needed?’ Then he will answer them, ‘I tell you the truth, just as you did not do it for one of the least of these, you did not do it for me.’ And these will depart into eternal punishment, but the righteous into eternal life.”
Does Jesus sound anything like, "Just make a decision for Jesus and you will be saved?"