Invitation is joining God in mission
In Acts 18 verse 10 it says “Many people in this city belong to me.2 The idea of God already at work and even on particular people before we go & invite is in my experience absolutely real. It is the hidden reality of the presence of God in our societies that He is more active behind our backs than in front of our faces. So we should join God in mission and find them and unite them to other believers in the city. Invite someone today and you might find someone who already belongs to God and will say yes before you have finished the invitation.