All wrongdoing is sin. In short: Persisting in wrongdoing shows a possible lack of rebirth. Here is the reasoning. In rebirth, we are agreeing to take on a new challenge of becoming sin-free.
Consider this analogy. A garden, like our lives, might be full of weeds. We see a weed as a plant that is wrongfully in a place where it does not belong, and usually, it is a plant that we regard as undesirable in the garden altogether. When we commit to weeding the garden, we are committing to making it new and free of weeds. We call the plants wrongfully there "weeds" for the purpose of committing to their removal. The removal we commit to is as complete as possible, eliminating anything that could cause the weeds to regrow.
The owner of the house might entrust the weeding to a gardener and arrange for the weeds to be cleared by waste management services. Alternatively, they might set aside an area for composting or burning, or even install an incinerator. The garden is on its way to rebirth, where it should be weed-free and tidy, with weeds and rubbish fully disposed of.
This is like the agreement of the gospel that God makes with our lives. We receive awareness of the guilt of wrongdoing, like recognizing that certain plants in the garden are weeds. We submit to a rebirth that entails the eventual full removal of wrongdoing (like weeding), while God, for His part, undertakes to oversee the whole process—helping it along by answering prayers and giving the Holy Spirit. He has provided a kind of waste disposal for wrongdoing (the rubbish and weeds) through the ministry of His Son, who provided for the destruction of the guilt of sin on the cross.
For our part, we seek to remove obvious wrongdoings, while looking to God in prayer and living by the Holy Spirit’s help, as well as through answers to our prayers and the prayers of others. We also pray about and point out wrongdoing in others’ lives to help fulfill the objective of pleasing God by striving for sin-free lives. It is a rebirth. Jesus gives truth from God, which the Holy Spirit applies to us to accelerate this objective and rebirth.
Sometimes, there are wrongs we cannot remove ourselves, and the Holy Spirit touches our lives to help us remove them and learn to live without them. The Spirit draws alongside us and encourages our committed efforts as well. Over time, the objectives will be achieved if we are truly committed and in a state of rebirth. Wrongdoing is not going to remain forever with this commitment, shared effort, and divine help.
If there are obvious wrongs that could be easily removed but persist for a long time (like a neglected garden), then it is reasonable to question whether there has truly been rebirth in that person's life. So, we pray about it, wait, and, if necessary, rebuke appropriately. If the wrongdoing persists, we would be right to question the commitment to the shared objective.
The evidence of rebirth is twofold. First, the person actively removes wrongdoing they recognize and, where they struggle, confesses and seeks prayer. Second, we expect evidence that God has recognized their commitment to a sin-free life. Jesus taught that this would be manifested through signs that the Holy Spirit has been given to them, such as miracles demonstrating the Father's involvement in their rebirth. Tongues is one evidence. Other miracles include the laying on of hands for healing, wonderful acts that clearly glorify the Father and the Son, prophesying, and more. The Scriptures list examples of these, as taught by the Lord Jesus Christ.
