Isa. 53:10 Yet it pleased the LORD to bruise him; he hath put him to grief: when thou shalt make his soul an offering for sin, he shall see his seed, he shall prolong his days, and the pleasure of the LORD shall prosper in his hand.
11 He shall see of the travail of his soul, and shall be satisfied: by his knowledge shall my righteous servant justify many; for he shall bear their iniquities.
One cannot get any clearer than the above language. Was the Son the object of God's wrath? ANSWER: "it pleased the Lord to bruise him....put him to grief". How could God be "pleased" to do that if there were no JUST basis to do it? Answer: he could not apart from a JUST basis! What is his purpose for being pleased, for bruising him, for putting him to grief? Answer: "make his soul an offering for FOR SIN." Why would he make such an offering for sin that included brusing him and putting him to grief? ANSWER: "he shall see the TRAVAIL of his soul AND BE SATISFIED." Why must he be "satisfied"? Better yet, WHY would it take this to "satisfy" him? Would not his perfect righteousness "satisfy" him sufficiently? That is your theory! There is something beyond mere sinless perfection that needs satisfaction that only be accomplished by being "pleased" to "bruise him" "put him to grief" and "travail" as a "sin offering"!! It is his wrath against sin and Christ legally taking the place of sinners and sin on the cross! Thus a PENAL satisfaction!
Now, this is the obvious import of these two texts in this context and you must EXPLAIN IT AWAY.
The ceremonial sacrifices on the day of atonement are just as clear and you must EXPLAIN THEM AWAY. Penal substitutionary atonement is the clear teaching of Scripture and is obvious in the ceremonial sacrifices and clear statements.