Hebrews 9:7
But only the high priest entered the second room, and then only once a year, and never without blood, which he offered for himself and for the sins the people had committed in ignorance.

Leviticus 16:29-34
This is to be a permanent statute for you: On the tenth day of the seventh month, you shall humble yourselves and not do any work—whether the native or the foreigner who resides among you— / because on this day atonement will be made for you to cleanse you, and you will be clean from all your sins before the LORD. / It is a Sabbath of complete rest for you, that you may humble yourselves; it is a permanent statute. ...

Numbers 29:7-11
On the tenth day of this seventh month, you are to hold a sacred assembly, and you shall humble yourselves; you must not do any work. / Present as a pleasing aroma to the LORD a burnt offering of one young bull, one ram, and seven male lambs a year old, all unblemished, / together with their grain offerings of fine flour mixed with oil—three-tenths of an ephah with the bull, two-tenths of an ephah with the ram, ...

Hebrews 9:25
Nor did He enter heaven to offer Himself again and again, as the high priest enters the Most Holy Place every year with blood that is not his own.

Hebrews 10:3
Instead, those sacrifices are an annual reminder of sins,

Isaiah 58:3-5
“Why have we fasted, and You have not seen? Why have we humbled ourselves, and You have not noticed?” “Behold, on the day of your fast, you do as you please, and you oppress all your workers. / You fast with contention and strife to strike viciously with your fist. You cannot fast as you do today and have your voice be heard on high. / Is this the fast I have chosen: a day for a man to deny himself, to bow his head like a reed, and to spread out sackcloth and ashes? Will you call this a fast and a day acceptable to the LORD?

Acts 27:9
By now much time had passed, and the voyage had already become dangerous because it was after the Fast. So Paul advised them,

Romans 3:25
God presented Him as an atoning sacrifice in His blood through faith, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand.

Hebrews 9:22
According to the law, in fact, nearly everything must be purified with blood, and without the shedding of blood there is no forgiveness.

2 Chronicles 7:14
and if My people who are called by My name humble themselves and pray and seek My face and turn from their wicked ways, then I will hear from heaven, forgive their sin, and heal their land.

Joel 2:12-13
“Yet even now,” declares the LORD, “return to Me with all your heart, with fasting, weeping, and mourning.” / So rend your hearts and not your garments, and return to the LORD your God. For He is gracious and compassionate, slow to anger, abounding in loving devotion. And He relents from sending disaster.

Psalm 51:1-4
For the choirmaster. A Psalm of David. When Nathan the prophet came to him after his adultery with Bathsheba. Have mercy on me, O God, according to Your loving devotion; according to Your great compassion, blot out my transgressions. / Wash me clean of my iniquity and cleanse me from my sin. / For I know my transgressions, and my sin is always before me. ...

Daniel 9:3-5
So I turned my attention to the Lord God to seek Him by prayer and petition, with fasting, sackcloth, and ashes. / And I prayed to the LORD my God and confessed, “O, Lord, the great and awesome God, who keeps His covenant of loving devotion to those who love Him and keep His commandments, / we have sinned and done wrong. We have acted wickedly and rebelled. We have turned away from Your commandments and ordinances.

Matthew 6:16-18
When you fast, do not be somber like the hypocrites, for they disfigure their faces to show men they are fasting. Truly I tell you, they already have their full reward. / But when you fast, anoint your head and wash your face, / so that your fasting will not be obvious to men, but only to your Father, who is unseen. And your Father, who sees what is done in secret, will reward you.

Luke 18:9-14
To some who trusted in their own righteousness and viewed others with contempt, He also told this parable: / “Two men went up to the temple to pray. One was a Pharisee and the other a tax collector. / The Pharisee stood by himself and prayed, ‘God, I thank You that I am not like other men—swindlers, evildoers, adulterers—or even like this tax collector. ...