Is there a secure way to block ads in Safari?

Is there a secure method to block ads within Safari? In order to block ads, most ad blockers require that they can see and change your encrypted traffic. This means that they would be able to see things like bank passwords transfer in clear text. My understanding is that on mobile Safari, ad blockers are not allowed to connect to the internet and simply block certain connections. Is there something similar on Safari for Mac where there is no way you could read and record private traffic?