
Leviticus deals with the type of sacrifice needed for different sin. For the more severe crimes, like murder, the death penalty was given; then lesser offenses were given fines and excommunication. Evidently, God does not see all sin as alike to Him.
In the New Covenant, we are given the assurance: we are all sinners and God the Father reaches out to us in love, to forgive us. In Acts, sinners receive condemnation, even during this lifetime, for their sins. The first-century church witnessed these events knowing the Old Testament. They recognized God’s work among them was consistent with Scripture, which had so accurately revealed His character. At no point did the church feel compelled to offer the rationale: That was then; this is now.
In chapter 8 of Acts, one who sins asks prayer to receive forgiveness for his sin. Paul tells him to pray to be forgiven.
1 John 1:9
If we confess our sins, He is faithful and just and will forgive us our sins and purify us from all unrighteousness.
Psalm 51 American Standard Version
1 Have mercy upon me, O God, according to thy lovingkindness: According to the multitude of thy tender mercies blot out my transgressions.
2 Wash me thoroughly from mine iniquity, And cleanse me from my sin.
3 For I know my transgressions; And my sin is ever before me.
4 Against thee, thee only, have I sinned, And done that which is evil in thy sight; That thou mayest be justified when thou speakest, And be clear when thou judgest.
5 Behold, I was brought forth in iniquity; And in sin did my mother conceive me.
6 Behold, thou desirest truth in the inward parts; And in the hidden part thou wilt make me to know wisdom.
7 Purify me with hyssop, and I shall be clean: Wash me, and I shall be whiter than snow.
8 Make me to hear joy and gladness, That the bones which thou hast broken may rejoice.
9 Hide thy face from my sins, And blot out all mine iniquities.
10 Create in me a clean heart, O God; And renew a right spirit within me.
11 Cast me not away from thy presence; And take not thy holy Spirit from me.
12 Restore unto me the joy of thy salvation; And uphold me with a willing spirit.
13 Then will I teach transgressors thy ways; And sinners shall be converted unto thee.
14 Deliver me from bloodguiltiness, O God, thou God of my salvation; And my tongue shall sing aloud of thy righteousness.
15 O Lord, open thou my lips; And my mouth shall show forth thy praise.
16 For thou delightest not in sacrifice; else would I give it: Thou hast no pleasure in burnt-offering.
17 The sacrifices of God are a broken spirit: A broken and contrite heart, O God, thou wilt not despise.
18 Do good in thy good pleasure unto Zion: Build thou the walls of Jerusalem.
19 Then will thou delight in the sacrifices of righteousness, In burnt-offering and in whole burnt-offering: Then will they offer bullocks upon thine altar.
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