It is interesting how many different ways that Mark 15:39 is translated:
"Surely this man was the Son of God!" (NIV)
"Truly this man was a son of God" (BBE).
"Truly this man was Son of God" (Darby).
"This man positively was the son of God" (Byington).
"Truly, this man, was God's son!" (Rotherham EB)
“Certainly this man was God’s Son.” (NWT 2013)
Compare NET Bible.
