Why do you believe in Jesus, the Son of God?
Second, I believe this because it is the Father’s command that we believe in the Son. We are firmly to trust Him that through Him and for His sake this salvation comes to us and we are received into grace, heard, and saved.
I also confess that I do not wish to add to my manifold sins this greatest sin of all — the rejection of the Son of God. Rather, I heartily desire to withstand all unbelief and submit to the command of the Father to listen to the Son and trust Him.
Links to Caspar Olevianus’ comments on God the Son are listed below: