Alma 63:11

therefore it became expedient for Shiblon to confer those sacred things, before his death, upon the son of Helaman, who was called Helaman, being called after the name of his father.

So Shiblon gave the sacred things to Helaman’s son before he died. The son’s name was also Helaman. He was named after his father.

Before he died, Shiblon passed the sacred things on to Helaman’s son, who was also named Helaman after his father.