When a person sins, they don’t have to confess that sin to a priest. Reason being, all Christians are priests, Christians are a royal priesthood. 1 Peter 2:9.
There is no such thing as a group of men selected as priests in the new testament which is the standard for men today. Matt 26:26-29. This is the covenant for which Christ died and is in force till the last day. Heb 1:1-2. And yes, there were priests under the old testament, the Levites were the priests for the nation of Israel, but that age has passed, and we now live under the age of Jesus Christ and the new testament. Heb 7:11. Heb 7:12:19-22. Heb 8:13. Heb 9:11-28. Heb 10:28-29 2 Cor 3:6-8.
So, what about when we sin? The new testament teaches that Christians confess their faults one to another and pray one for another. James 5:14-16. Acts 8:18-24.Just go to any faithful member of the church and talk to them about your sin and just pray together; that all its takes.
Having priests is not according to the word of God.