1. We do not cooperate with God, this would be us saving ourselves in doing whatever works are required.
2. The woman in the corner of a burning house who is rescued by the fireman because she chose to trust him. and receive his help. did not cooperate with the fireman, she placed her faith in him, knowing she could not save herself
3. repenting is just a change of heart. or going from a state of unbelief to a state of faith. it is not really doing something. Those who have repented will receive the gift God is offering to them in faith. this again is not a work. you are just receiving the gift in faith. On Christmas day when a child take a gift handed to him, he is not cooperating. He is receiving a gift in faith from someone who loves him.
This is what scripture teachers, our faith placed in Christ for salvation is non meritorious because it is the condition God sets.
After Pentecost God was pouring our His spirit on people to help the church get established under tremendous persecution, however those statements in scripture are time specific under very specific conditions.
Even Paul told King Agrippa he obeyed!
19“And so, King Agrippa, I obeyed that vision from heaven.
Acts 26:19
Very clearly Paul informs us that people retain the ability to either respond positively or not, God desires humility and genuineness.