Does God the Son have Faith?

While answering another question , a comment perplexed me and I cannot quite understand it. > "It was not Christ 'fulfilling the law' that saved, but him bearing the punishment for sin we all deserve, in our stead. So God's righteous punishment for sin was borne by Christ though he was sinless. **It wasn't his Passion. It was his faith unto death.**" **Which Christian faiths teach that**1 it was not the "fulfillment of the Law" & "Passion of Christ" that saved us, but instead Jesus' Faith? That is... God's Faith in God, saved us. 1**(The bolded phrase above is my Primary Question, i.e. which denomination/faiths and with what reasoning)** To my understanding God does not have Faith. Perhaps there is an alternative definition of "Faith" being used here that I am unaware of? (*Alternative thought, that might explain my confusion*) Even the faith tag on this site [says]((https://christianity.stackexchange.com/tags/faith/info)) : "Faith: Belief, trust, and loyalty **towards God**, Jesus, and the Christian religion." I've been unable to find anything online or in reference sources, because all "hits" when searching the term "God+Faith" give results about how humans should have faith in God. Not about how God has Faith.