J. Gresham Machen, in his Christian View of Man, a series of lectures that he originally read on the radio, says:
Do you not see, my friends? That is the reason why the Christian clings to the doctrine of the deity of Christ. He does not approach it as a cold academic matter, but he comes to it as a drowning man lays hold of a plank that may save him from the abyss. No lesser Christ could save us; this Christ alone could save us from eternal death (p. 23).