Why is the concept of 'much people in this city' significant?

In Acts 18:10, God reassures Paul, stating, 'For I have much people in this city,' signifying the elect individuals whom God has ordained to hear and believe the Gospel. This statement underscores the doctrine of election, where God, in His sovereignty, chooses a people for Himself. The assurance that there are many who will come to faith encourages Paul to continue preaching bravely amidst opposition and rejection. It illustrates the rich grace of God who ensures that His elect will respond to His calling, thereby fulfilling His promises in the spread of the Gospel.