Shared ground
Paul presents Ananias as a credible Jewish figure: “devout according to the law” and respected by the local Jewish community. That description is part of Paul’s defense speech and helps explain why Ananias’s words should be taken seriously by a Jewish crowd.
The text explicitly links three things: restored sight, a divine appointment (“the God of our fathers has appointed you”), and a future role as a public witness. Ananias frames Paul’s calling in Israel’s story and says Paul’s witness will be based on what he has “seen and heard.”
The passage also presents baptism and “washing away” sins alongside “calling on the name of the Lord.” Whatever else is inferred, the text itself puts these actions close together as Paul’s immediate next steps.
Where interpretation differs
Who is “the Righteous One”? Many read this as referring to Jesus, since the wider story is about Paul encountering Jesus and being commissioned. Others note that the title could be heard as a scriptural-style description that needs its referent supplied by the broader context; they still often conclude it points to Jesus, but they stress that Acts 22 itself uses a title rather than the name.
How does “wash away your sins” relate to baptism and calling on the Lord? Some readers take the line to mean baptism is the moment sins are washed away. Others think the washing is tied primarily to “calling on the name of the Lord,” with baptism as the outward act that accompanies that appeal. A third approach holds that Luke is describing a unified conversion-response package (get up, be baptized, calling on the Lord) without spelling out a step-by-step sequence of what causes what.
Is “calling on the name of the Lord” something said during baptism? The grammar can be read as closely connecting the invocation with the baptismal act. But the text does not give a transcript of words spoken at baptism, so some treat the phrase as describing the overall posture of appeal to the Lord that characterizes the baptism event.
Why the disagreement exists
The questions mainly come from how to connect the verbs in v.16 (“be baptized,” “wash away,” “calling on the name…”) and from the use of a title (“the Righteous One”) instead of a proper name. The passage is compact and assumes the audience already knows the larger story (compare Paul’s earlier encounter narrative in Acts 9), so readers differ on how much to import from elsewhere when explaining these phrases.
What this passage clearly contributes
It shows Paul’s call being narrated as continuous with Israel’s God (“God of our fathers”) and mediated through a respected Torah-observant messenger. It also ties Paul’s future mission to personal encounter and auditory/visual testimony (“seen and heard”), and it presents baptism plus invoking the Lord’s name as the immediate, fitting response to Paul’s new situation.