Spiritual Renewal Through Sincere Repentance
Based on the presented quotes, the atonement of sins that could lead to catastrophes such as initiating wars on Russia can only be achieved through sincere and constant repentance, a return to God’s commandments, and reliance on God’s mercy. In the source from file link txt, it is noted that when people faced hardships, they began to remember God, pray, atone for their sins, and thus attain grace:
"When a person has experienced hardships, he remembers God, begins to pray, atoning for his sins, and regains God’s mercy." (source: link txt)
Furthermore, the first source from file link txt emphasizes that the key means are fervent prayer, holy fasting, charity toward the poor, and sincere repentance. These actions are aimed not simply at a formal atonement of sins but at deep spiritual transformation and a return to true Christian values.
As for the time frame, the quotes do not specify a particular period. Atonement is portrayed as a continuous and personal process, dependent on the strength of one’s spiritual contrition and consistency in leading a virtuous life. Thus, there is no set "time period"—it is a constant striving for improvement before God that begins in times of trial and continues throughout the believer’s life.
Supporting citation(s):
"When a person has experienced hardships, he remembers God, begins to pray, atoning for his sins, and regains God’s mercy." (source: link txt)
"These actions, according to the testimony of the word of God itself, consist of fervent prayer, holy fasting, charity toward the poor, and sincere repentance for our sins." (source: link txt)