Scripture also says we are to confess our sins to one another. The traditional Churches maintain a structure in which we remain true to Scripture without leaving the possibility of scandalising the weaker members of their congregations by confessing to our priest.
Who do you confess your sins to in order to be obedient to God's word?
The use of certain terms in the Bible are often connected to interpretation, doctrine, spiritual nourishment. Bread, water, grain, fruit, wine etc. almost always mean revelation from God.
Isaiah 55
1Ho, every thirsty one, come ye to the waters, And he who hath no money, Come ye,
buy and eat, yea, come, buy Without money and without price, wine and milk.
These give life to the spirit and light to the eyes, so that a person can walk toward God.
Those who do not eat the flesh and drink the blood, or perform the sacrament without discernment, do not next sit down to receive spiritual nourishment, fall sick, even die, like Adam. Separated from God, not knowing His word, His guidance, is death.
Realisation of our poor spiritual health requires one to approach brothers and sisters for prayer. This is done after confession of the need.
The proof that the issue being corrected is poor spiritual health, lack of guidance from God, is:
James 5
19My brethren, if any among you strays from the truth and one turns him back, 20let him know that he who turns a sinner from the error of his way will save his soul from death and will cover a multitude of sins.
I don't see the necessity for a priest. Any one can turn him back.