This is the week before Palm Sunday, then Easter, aka Liturgy of the Passion. The Isaiah, Psalm, and Philippians entries are the same each year, but the Gospel reading changes each year. Year B focuses on Mark, so we get a full load of him.

Isaiah 7:10-14

I'm being a bit lazy here. It's Spring and I'm getting my second Covid shot soon, so I'm not so much in the mood for writing Lectionary helpers. Year C Lent 6

Phillippians 2:5-11

See link above.

Mark 15:1-39 (40-47)

So many well known verses here. It starts with Jesus giving the famous non-answer to Pilate. Instead of claiming to be King of Jews, an offense that would definitely get him the death penalty, his answer indicates the man with the power is going to do what he wants. Pilate is "amazed" that he puts up no real defense. If he had, he would have played into the sham, the show trial. Next we get some disputed history about releasing a prisoner and the thing that was used centuries later to fuel anti-Semitism.
At verse 25, we can see the beginning of a liturgy. It is nearly impossible that the time of the crucifixion was noted, let alone remembered for years before being written down. The times given are still used for rituals, like the service of Unleavened Bread and the darkening of the Temple. At three, Jesus calls to God with a bit of Aramaic. This is Mark, so that's it, Jesus is forsaken and doesn't seem to know why.
There are so many details here. Each one could take a year of study. Why is he between two bandits? Who was this guy who carried his cross for him? Why is he offered sour wine? What about the two women present? Why does Joseph of Arimethea get to lay him in a tomb?
One of my favorites is the in the temple curtain is ripped. It seems like a throw away line if you don't know what that is. That curtain was a symbolic barrier in the temple. The Priests could go behind it, but you couldn't, except during Yom Kippur Day. The tearing of it is a symbol of a central reason for Jesus' existing, to break down that barrier. When that happens, the Centurion suddenly gets it about who Jesus is. Some magic has happened. Everyone now has access to God.
And what of Jesus not knowing why all this happening? Bart Ehrmann speculates it is symbolic of the people who are worshipping God. Their life is miserable, they are slaves, and they are being killed by the Romans. They must have wondered why. This story shows God is at work and miracles will come.
I also like Ehrmann's comment on what most churches will be doing this Sunday or at the Easter pageant. They will stitch together some words from Mark with other gospels, as if each have the same view but are just reporting it differently. He says, "When you splice their accounts together into one big mega-account, in effect you have rejected what each one of them has to say, and have written your OWN account. You can do that if you want, but when you do so, you need to realize what you've done: you have written your own Gospel and declared (ironically) that the Gospels of the New Testament simply got it all wrong (it's ironic because your new account has come completely from the two accounts that you have decided are both wrong)."