... in accordance with the scriptures

1 Corinthians 15:3-4
For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the scriptures, that he was buried, that he was raised on the third day in accordance with the scriptures.
The gospel, the good news about who Jesus is and what he has done, is in accordance with the scriptures. It is not God's plan B, it is not a change of attitude or approach from the Old Testament. From the moment after Adam and Eve sin and God prophesies about the one who will crush the serpent's head to the cry of "worthy is the Lamb who was slain" in Revelation, the gospel is the storyline of the Bible.
If we are not rooted in the biblical understanding of the gospel we are prone to let other things become central. We can't operate on the basis of "it seems to me..." or "surely God wouldn't...".

Jesus death and resurrection on our behalf happened in accordance with the scriptures and that is where we need to look to understand their implications.