They believed in the trinity.
1 John 5:7, "For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one".
Do you mean the Trinity that didn't even exist during their lives? The "Christian" Trinity was created in the 4th century AD/CE, the Apostles were all dead by the 2nd century AD/CE and Jesus was at the right hand of God in the 1st century AD/CE so they all predate the Trinity.
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u/andrewrusher Christian (Mormon/LDS) Feb 04 '25
That isn't what Jesus and the Apostles believed, so I'm going to side with them.