Ambrose of Milan

But still these are but slight examples of the testimony to the Lord. The full assurance of faith is the cross of the Lord, His death and burial. Hence He adds, And blessed is he who shall not be offended in me. For the cross may cause offence, even to the elect. But there is no greater testimony than this of a divine person. For there is nothing which seems to be more surpassing the nature of man than that one should offer Himself for the whole world.