It's unfortunate that people invariably tie the word REPENTANCE to sin.
There are many OT verses where a SINLESS God repents. Gen 6:6-7, Deut 32:36, Jud 2:18, 1 Sam 15:11 & 29 to name a few.
The baptism of repentance preached by John the Baptist. Is 100% to/for the Nation of Israel. ZERO gentiles were in the wilderness being baptized by John.
TWO PROGRAMS: The Nation of Israel is a called out assembly. Program 1. The Body of Christ is a called out assembly. Program 2.
The two called out assembiles are completely separate.
Program 1: Required works via Mosaic Law & repentance (turn back to God) for breaking covenant with God Jer 31:32. They knew God & had strayed from him. They were to repent = change their minds/course & return to their God. The water baptism was a Jewish purification doctrine/ritual. A cleansing to prepare them (Johns purpose) to meet their God. Their promised Messiah, who alone, could remove their sin. All they needed to do was identify that Jesus was the long promised Messiah. And trust in/on him for the rest.
Ex 19:10 God tells Moses to have the people wash/clean themselves in preparation to meet their God on the 3rd day. A common practice throughout the ages. When going before Royalty, was out of respect to clean one's self up.
Being water baptized DOESN'T remove sin, law keeping DOESN'T remove sin, obedience DOESN'T remove sin, repentance DOESN'T remove sin.
NOTHING BUT THE BLOOD OF CHRIST CAN REMOVE SIN!
Program 2: The gentile had no covenant with God. Repentance for the gentile wasn't to return to God. Repentance for the gentile was to acknowledge they are sinners. Every sin they had ever committed was against a sovereign creator. Repent/turn to God & away from self serving works. And place their FAITH in the Son of God's selkless work of redemption. Found in Christ's death (sins required wage paid) burial (proof Christ died) & resurrection (God's receipt, payment received & accepted)
Mixing the two programs invariably leads to doctrinal misinterpretations
Acts 10:44 While Peter yet spake these words, the Holy Spirit fell on all them which heard the word.
(NOTE: They Believed (vs43) & as Peter spoke (vs44) The Holy Spirit fell on then. No REPENTANCE, No water baptism, No circumcision, they brought no sin sacrifice to the Temple, No law keeping etc)
Thru Faith & faith alone these gentiles received the baptism of, and were ETERNALLY SEALED by, the Holy Spirit (vs45)
ActS 11:18 When they heard these things, they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life
(NOTE: God GRANTED gentiles repentance)
Rom 2:4 Or despisest thou the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leadeth thee to repentance?
(NOTE: It's not thru OUR OWN great work of obedience, that we REPENT/change our thinking/course. It's the indwelling Holy Spirit that leads us to REPENT/change our thinking outlook).
Rom 16:26 but now revealed and made known through the prophetic writings by the command of the eternal God, ""so that all the Gentiles might come to the obedience"" ""that comes from faith""
(NOTE: Gentiles are brought to obedience/repentance/godly living thru Faith)
Romans 3:21 (A) now the righteousness of God without the law is manifested (revealed)
(NOTE: Righteousness WITHOUT law keeping)
22 Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:
(NOTE: Faith "OF" Jesus Christ! Righteousness is brought/imputed to ALL that believe in JESUS PAYMENT & RECURRECTION. Other scripture on the Faith ""OF"" Christ. Gal 2:16, 2:20, 3:22)
Habakkuk 2:4 Behold, his soul which is lifted up is not upright in him: but the just shall live by his faith.
(NOTE: The just live by """HIS""" faith!)
Romans 5:9 For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.
(NOTE: By by the OBEDIENCE of ONE = Jesus Christ! Many = Those that will BELIEVE?TRUST in Christ's FINISH SIN REDEMPTIVE WORK! Will be made righteous)
Works based doctrines are opposite of the facts. It makes salvation about you. While ROBBING Christ of the glory to be found in his selfless, righteous, redemptive, sacrificial sin atoning WORKS/payment.
If a sinless Jesus (he didn't die for his own sins, he didn't have any sin) died for all, of every believers sins. What sin could/can cost a believers salvation?
That's not to say sin doesn't/can't have consequence. Certianly sin can bring consequence. The consequence from sin could manifest itself in many different ways. A health issue, a broken relationship, disease, prison, lost of heavenly rewards earned etc.
Although, a believers sin may result in negative consequence. It """WILL NOT""" result in the loss of salvation (1 Cor 3:11-15).
Finally, this false notion a christian must confess every sin:
1st, Its impossible, Jesus adds unpure thougts to sinning's death sentence (Matt 5:28).
2ndly, Christ paid for all of every believers sins. To ask forgiveness shows a lack of faith in Christ's finished payment.
When the Holy Spirit reveals that to the believer, they've miss the mark/sinned & we all will. We are to thank & praise God for the forgiveness ALREADY PROVIDED via our Great God & Savior, Jesus the Christ.
Although, a believers sin may result in negative consequence. It WILL NOT result in the loss of salvation (1 Cor 3:11-15).
Unbelief toward God & Christ is the only unforgivable sin.
Acts 10:44 NO REPENTANCE MENTIONED
1 Cor 15:1-4 NO REPENTANCE MENTIONED.
Rom 10:8-15 NO REPENTANCE MENTIONED
Ehp 1:13 NO REPENTANCE MENTIONED
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
(NOTE: Grace = Jesus Christ; is a GIFT Jn 3:16. We access this gift by/thru FAITH Rom 5:2)
When Faith is your root. Repentance/Obedience will be your fruit.
When we trust & rest in Christ, God works. When we trust in our own works, Gods Rests. MOO! My Opinion Only