In a link to the Wisconsin Evangelical Lutheran Q&A regarding the peccability of Christ, (which they deny) the answer goes on to say:
Quote
Similar issues arise, of course, in connection with Jesus’ death. Though Jesus died according to his human nature, his death was the death of the God-man. We can properly say God died.
God Died?

Is this true can we claim that the Son of God died?

Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo