John 20:
26 And after eight days His disciples were again inside, and Thomas with them. Jesus came, the doors being shut, and stood in the midst, and said, “Peace to you!” 27 Then He said to Thomas, “Reach your finger here, and look at My hands; and reach your hand here, and put it into My side. Do not be unbelieving, but believing.”
28 And Thomas answered and said to Him, “My Lord and my God!”
“Was Thomas wrong? Was he rebuked for calling Jesus Christ God? John 20:28 And Thomas answered and said to Him, “My Lord and my God!”
Here the word “God” derived from the Greek term “Theos” had broader usage than what is customary today, and was used to describe a range of authorities, and was not limited to a personal name for the supreme Deity.
Note the term was used to describe the Roman Governer in Acts 12:22, and even Satin in 2 Corinthians. 4:4, and Moses in Exodus 7:1.
At the time “God” was also a commonly used term for authority.