This phrase marks a break in the main story line. Here Luke tells background information about Herod. (See: [[rc://en/ta/man/translate/writing-background]])
This can be stated in active form. AT: "some people said" (See: [[rc://en/ta/man/translate/figs-activepassive]])
still others that one of the prophets of long ago had risen
The word "said is understood from the previous phrase. AT: "still others say that one of the prophets of long ago had risen" (See: [[rc://en/ta/man/translate/figs-ellipsis]])
Herod assumes that it is impossible for John to rise from the dead. This can be stated clearly. AT: "It cannot be John because I had his head cut off. So who is this man" (See: [[rc://en/ta/man/translate/figs-explicit]])
Herod's soldiers would have carried out executions. AT: "I commanded my soldiers to cut off John's head" (See: [[rc://en/ta/man/translate/figs-explicit]])