'With God' in the Bible
For we do not have [the right to] rule over your faith [i.e., to dictate concerning your personal relationship with God], but we want to work with you for your happiness. For you are [already] standing firm in your faith. [Note: This whole narrative alludes to some unresolved problems still existing there in Corinth].
So, we [apostles] are ambassadors, [speaking] on behalf of Christ. [It is] as though God were appealing [to people] through us: "We urge you people, on behalf of Christ, to be restored to fellowship with God."
God considered Christ to be sinful on our behalf, even though He never sinned, so that we could be considered right with God through Him.
As workers together with God we urge you also, who have received God's unearned favor, do not allow it to be for nothing,