"Repentance and remission of sins..." That's what Jesus said. And, the "remission of sins" is obtained through genuine faith when one repents and believes on Christ (
Romans 5:1). "Peace with God" means that God's angry wrath has been satisfied and that the sinner is now saved.
How did the UPC view these things? The UPC officially believed that one was saved at repentance.
Matthew 26:28: "... this is my blood of the new testament, which is shed for many for the remission of sins."
John 3:16-18: "... that whosoever believeth in him should not perish, but have everlasting life."
John 5:24: "He that heareth my word, and believeth on him that sent me, hath everlasting life..."
Acts 13:38-39: "by him all that believe are justified from all things..."
Acts 2:38-39: "... for the remission of sins..."
Acts 5:31: "... a Saviour, for to give repentance to Israel, and forgiveness of sins."
Acts 10:43: "To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins."
Acts 15:9: "... purifying their hearts through faith."
Acts 26:18: (Paul quoting Jesus) "... that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me."
Romans 1:7: "... the just shall live by faith..."
Romans 5:9: "justified by his blood..."
Romans 5:18: "... by the righteousness of one the free gift came upon all men unto justification of life."
Romans 3:22-28: "... the justifier of him which believeth in Jesus..." "... a man is justified by faith..."
Ephesians 1:7: "... we have redemption through his blood, the forgiveness of sins, according to the riches of his grace"
Colossians 1:4: "In whom we have redemption through his blood, even the forgiveness of sins."
Colossians 1:20: "... having made peace by the blood of his cross..."
Hebrews 9:22: "...without shedding of blood is no remission."
Hebrews 9:28: "... unto them that look for him shall he appear the second time without sin unto salvation."
James 1:25: "But whoso looketh into the perfect law of liberty, and continueth therein, ... but a doer of the work, this man shall be blessed in his deed."
1 Peter 1:19: "... redeemed ... with the precious blood of Christ."
1 John 1:7: "... the blood of Jesus Christ his Son cleanseth us from all sin."
Revelation 7:9-14