Psalm 51:3-19 and Isaiah 58:1-9a

Psalm 51:3-19
3 Be merciful to me, O God, according to your great mercy. And, according to the plentitude of your compassion, wipe out my iniquity.
4 Wash me once again from my iniquity, and cleanse me from my sin.
5 For I know my iniquity, and my sin is ever before me.
6 Against you only have I sinned, and I have done evil before your eyes. And so, you are justified in your words, and you will prevail when you give judgment.
7 For behold, I was conceived in iniquities, and in sinfulness did my mother conceive me.
8 For behold, you have loved truth. The obscure and hidden things of your wisdom, you have manifested to me.
9 You will sprinkle me with hyssop, and I will be cleansed. You will wash me, and I will be made whiter than snow.
10 In my hearing, you will grant gladness and rejoicing. And the bones that have been humbled will exult.
11 Turn your face away from my sins, and erase all my iniquities.
12 Create a clean heart in me, O God. And renew an upright spirit within my inmost being.
13 Do not cast me away from your face; and do not take your Holy Spirit from me.
14 Restore to me the joy of your salvation, and confirm me with an unsurpassed spirit.
15 I will teach the unjust your ways, and the impious will be converted to you.
16 Free me from blood, O God, the God of my salvation, and my tongue will extol your justice.
17 O Lord, you will open my lips, and my mouth will announce your praise.
18 For if you had desired sacrifice, I would certainly have given it, but with holocausts, you will not be delighted.
19 A crushed spirit is a sacrifice to God. A contrite and humbled heart, O God, you will not spurn.
Isaiah 58:1-9a
1 Cry out! Cease not! Exalt your voice like a trumpet, and announce to my people their wicked acts, and to the house of Jacob their sins.
2 For they also seek me, from day to day, and they are willing to know my ways, like a nation which has done justice and has not abandoned the judgment of their God. They petition me for judgments of justice. They are willing to draw near to God.
3 "Why have we fasted, and you have not taken notice? Why have we humbled our souls, and you have not acknowledged it?" Behold, in the day of your fasting, your own will is found, and you petition for payment from all your debtors.
4 Behold, you fast with strife and contention, and you strike with the fist impiously. Do not choose to fast as you have done even to this day. Then your outcry will be heard on high.
5 Is this a fast such as I have chosen: for a man to afflict his soul for a day, to contort his head in a circle, and to spread sackcloth and ashes? Should you call this a fast and a day acceptable to the Lord?
6 Is not this, instead, the kind of fast that I have chosen? Release the constraints of impiety; relieve the burdens that oppress; freely forgive those who are broken; and break apart every burden.
7 Break your bread with the hungry, and lead the destitute and the homeless into your house. When you see someone naked, cover him, and do not despise your own flesh.
8 Then your light will break forth like the morning, and your health will improve quickly, and your justice will go before your face, and the glory of the Lord will gather you up.
9 Then you will call, and the Lord will heed; you will cry out, and he will say, "Here I am,