If you condition salvation on your believing, thats works. Also forgiveness of sins isn't offered, its given to them Christ died for. Acts 5:31
31 Him hath God exalted with his right hand to be a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins.
What you talking about isnt taught by Paul, or Peter, its not even in the scripture.
There is a miss-understanding among those who hold God does everything.
He is the Lord of All, He lives as the Father, who knows all. And He waits for His creation to acknowledge their debt to Him. It is in His nature, not to shout His own praise, but in a sense earn it, for creation itself to arise in a song of praise because literally they love Him and Praise Him for who He is.
So you have Israel, who have been commanded to wipe out all the tribes living in Canaan but a group appear, faking they are far off, to get an agreement with Israel to not attack or kill them. Explicit in this deception is the phrase,
"The men of Israel sampled their provisions but did not inquire of the LORD." Jos 9:14
The Lord calls us to seek Him, to find Him, to ask. The Lord has done everything to demonstrate who and what He is, His nature and His terms. For false gods, people will sacrifice their children, build odd poles, have strange and elaborate ceremonies, but the Lord just desires us and honesty.
It is a hard thing to say, but if one thinks the Lord is happy if we do not respond, are passive and ignore the real issues and change, a life and interactions that do not give glory to the Son, then something is wrong.
A light, jewels in a mortal body, shine out, are undeniable.
Someone wrote a chorus about Jesus fighting through to save His people, puts the idea that Jesus keeps people despite who they are and their lostness. But Jesus makes people found, He takes away their lostness so they know they are found. Beside these folk Jesus stands and works His purposes. One is not found until you begin to walk the path and following. God bless you