In 1 John 2:2, is says of Jesus Christ, "He is the propitiation for our sins, and not for ours only but also for the sins of the whole world". "propitiation", is the Greek noun "ἱλασμός", which literally means, "a means of appeasing"
Isaiah 53 clearly says that Jesus Christ was "stricken, smitten by God, and afflicted...Yet it was the will of the LORD to crush him; He has put Him to grief" (4, 10)
2 Cor. 5:21, "For He (the Father) hath made Him (Jesus Christ) to be sin for (ὑπέρ, instead of, on our behalf) us, who knew no sin; that we might be made the righteousness of God in him"
Galatians 3:13, "Christ redeemed us from the curse of the law by becoming a curse for (ὑπέρ, instead of, on our behalf) us—for it is written, “Cursed is everyone who is hanged on a tree”
All very clear to me, that the Bible does teach Penal Substitutionary Atonement!