The Roman Catholic Church, according to the General Roman Calendar, celebrates the following in Sunday, 2021-03-21:
Jer 31:31-34
The days are coming, says the LORD,
when I will make a new covenant with the house of Israel
and the house of Judah.
It will not be like the covenant I made with their fathers
the day I took them by the hand
to lead them forth from the land of Egypt;
for they broke my covenant,
and I had to show myself their master, says the LORD.
But this is the covenant that I will make
with the house of Israel after those days, says the LORD.
I will place my law within them and write it upon their hearts;
I will be their God, and they shall be my people.
No longer will they have need to teach their friends and relatives
how to know the LORD.
All, from least to greatest, shall know me, says the LORD,
for I will forgive their evildoing and remember their sin no more.
Ps 51:3-4, 12-13, 14-15.
R. (12a)
Create a clean heart in me, O God.
Have mercy on me, O God, in your goodness;
in the greatness of your compassion wipe out my offense.
Thoroughly wash me from my guilt
and of my sin cleanse me.
R.Create a clean heart in me, O God.
A clean heart create for me, O God,
and a steadfast spirit renew within me.
Cast me not out from your presence,
and your Holy Spirit take not from me.
R.Create a clean heart in me, O God.
Give me back the joy of your salvation,
and a willing spirit sustain in me.
I will teach transgressors your ways,
and sinners shall return to you.
R.Create a clean heart in me, O God.
Heb 5:7-9
In the days when Christ Jesus was in the flesh,
he offered prayers and supplications with loud cries and tears
to the one who was able to save him from death,
and he was heard because of his reverence.
Son though he was, he learned obedience from what he suffered;
and when he was made perfect,
he became the source of eternal salvation for all who obey him.
Jn 12:20-33
Some Greeks who had come to worship at the Passover Feast
came to Philip, who was from Bethsaida in Galilee,
and asked him, "Sir, we would like to see Jesus."
Philip went and told Andrew;
then Andrew and Philip went and told Jesus.
Jesus answered them,
"The hour has come for the Son of Man to be glorified.
Amen, amen, I say to you,
unless a grain of wheat falls to the ground and dies,
it remains just a grain of wheat;
but if it dies, it produces much fruit.
Whoever loves his life loses it,
and whoever hates his life in this world
will preserve it for eternal life.
Whoever serves me must follow me,
and where I am, there also will my servant be.
The Father will honor whoever serves me.
"I am troubled now. Yet what should I say?
'Father, save me from this hour?'
But it was for this purpose that I came to this hour.
Father, glorify your name."
Then a voice came from heaven,
"I have glorified it and will glorify it again."
The crowd there heard it and said it was thunder;
but others said, "An angel has spoken to him."
Jesus answered and said,
"This voice did not come for my sake but for yours.
Now is the time of judgment on this world;
now the ruler of this world will be driven out.
And when I am lifted up from the earth,
I will draw everyone to myself."
He said this indicating the kind of death he would die.