Did the early church invent the divinity of Jesus over a long period of time?

How early is the doctrine of the divinity of Jesus? When I answer this question, I only want to use the earliest, most reliable sources – so I can defend them on historical grounds using the standard rules of historiography. The 4 sources that I would use are as follows:The early creed in 1 Corinthians 15:3-8, and 1 Corinthians 1A passage in Philippians 2Two passages from Mark, the earliest gospelA passage from Q, which is an early source of Matthew and LukeSo let’s see the passages.