Heidelberg Catechism - Question 30
Q
30
Do those believe in the only Saviour Jesus who seek their salvation and well-being from saints, in themselves, or anywhere else?
A
No. Though they boast of Him in words, they in fact deny the only Saviour Jesus. For one of two things must be true: either Jesus is not a complete Saviour, or those who by true faith accept this Saviour must find in Him all that is necessary for their salvation.
