The immutability of Christ is the changelessness of the Christ revealed in the Gospels. All that He proved to be in His ministry is an indication of the way He really and always is. That is why it is legitimate for us to see the Gospel accounts not only in the context of redemptive history but as portrayals of the character of the Christ who lives forever. We are able to say, “If Jesus was like this then, Jesus is like this now.”
Do you know the Christ of the Gospels? Or have you fallen into the trap to which Christians (especially, perhaps, Reformed Christians) who love doctrine and systematic theology are sometimes susceptible (unlike John Calvin, it should be said): fascination with dogmatic formula at the expense of love for the Savior’s person?
– Sinclair Ferguson, In Christ Alone
A Costly Trap