John Owen (1616-1683) a Puritan theologian saw the believer's need for daily cleansing. He wrote, "Go daily to Jesus for cleansing. Hence also is manifest the necessity we have of continual applications to Jesus Christ for cleansing virtue from his Spirit and the sprinkling of his blood on our consciences to purge them from dead works."
The Lord Jesus not only cleansed you at the point of conversion, but he graciously continues to cleanse you upon confession of sin (1 John 1:7, 9). Scripture warns us not to claim that we are sinless. If we do, then we only deceive ourselves (1 John 1:8, 10). John Owen wisely saw "the believer's need for daily cleansing."
There are no perfect Christians here below. Temptations continue. Battle with the flesh is reality (Galatians 5:17). Sanctification is not perfect nor complete in this life. Growth in holiness continues, but we do sin from time to time. Free from the bondage to sin, we are not yet free from the temptation to sin.
Owen recognized the need for daily cleansing from our sins as believers. Not only did he recognize the need, but more importantly, he recognized that cleansing is open daily for all believers. Our conscience witnesses to our need. The blood of Jesus avails to daily cleanse you from all sin.