**Rather than taking a text in isolation**
I referred to John 20:23. But I gladly include Matt. 28:19,20; Mark 16:15-18; Luke 24:47-49.
If you don’t think that those orders were followed in Acts chapter 2, then you must be preaching another gospel.
After the initial pouring out of the Spirit, Peter preached Christ. When the listeners admitted their conviction of sin, and asked “what shall we do?”, “Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.” Acts 2:38
Are those instructions from heaven, or of men?
Rather, ignoring how the rest of the NT shows how such texts were misunderstood, if you were interpreting those texts (as i had assumed) as teaching Catholicism's doctrine that souls should make confession of everyday faults (and must do for mortal sins) to her priests and receive sacramental absolution from them, and fulfill the penance they give which allow us to become co-heirs with the risen Christ, (CCC 1455-1460) then you would be preaching another gospel, for the reasons shown.
The only regular confession of sins (apart from to God) that the NT exhorts is to each other in general that we be healed, and who also may exercise spiritual binding and loosing, and while confession of serious sins normally should be confessed to leadership who cares for them, esp. public sins that would scandalize the church, and whose intercession can obtain deliverance/healing from chastisement (even for sins of ignorance), this is not to Catholicism's distinctive sacerdotal priests but to NT presbuteros.
After the initial pouring out of the Spirit, Peter preached Christ. When the listeners admitted their conviction of sin, and asked “what shall we do?”, “Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.” Acts 2:38 Are those instructions from heaven, or of men?
As regards teaching baptism as necessary for sins, it is the faith which baptism requires and expresses that purifies the heart, thus the promise of Acts 2:38. To be baptized as convicted repentant souls is to manifest the justifying faith in the heart, and confessing the Lord Jesus is confirmatory of salvation/saving faith. Thus while salvation is promised for those who will believe and obey, Peter did not require baptism for the washing of regeneration that purifies the heart, but that faith does: \
To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins. (Acts 10:43)
For they heard them speak with tongues, and magnify God. Then answered Peter, Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we? (Acts 10:46-47)
And when there had been much disputing, Peter rose up, and said unto them, Men and brethren, ye know how that a good while ago God made choice among us, that the Gentiles by my mouth should hear the word of the gospel, and believe. And God, which knoweth the hearts, bare them witness, giving them the Holy Ghost, even as he did unto us; And put no difference between us and them, purifying their hearts by faith . (Acts 15:7-9)
While the kind of faith that is salvific is the kind which effects obedience, (Jn. 10:27-28; Heb. 6:9) and baptism is the first manifestation of that, is it faith which is counted for righteousness, (Rm. 4:5) purifying the heart justifying the heart, while the effects in heart and deed justify one as being a believer.