You would like to infer that, but the logic of it is:
Repent(confess and forsake sins, and He that is righteous and just will abandon your sins and cleanse you from all unrighteousness, 1 Jn. 1:9 applied), and now being inwardly cleaned, be ritually externally purified by baptism on the basis of sins already confessed and remitted.
What's your problem with that syntax?
Matthew 26:28
For this is My blood of the new covenant, which is shed for many for the remission of sins.
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There’s that word eis again. “Because of”, huh?
So. Jesus went and shed his blood AFTER (because of) the sins had already been forgiven?