What does the Bible say about God's calling of His people?

In Mark 3:13-19, we observe that it is the Lord who calls those He has chosen. The text states, "And he goeth up into a mountain and calleth unto him whom he would, and they came unto him" (Mark 3:13). This demonstrates the electing grace of God, revealing that the Lord's choice is not based on human merit but instead on His will. This aligns with the doctrine of election, which teaches that God has set His love upon His chosen people before the foundation of the world, drawing them to Himself in time and ensuring their response to His call. Thus, when God calls, His people come, not out of obligation, but because He speaks to their hearts with irresistible grace.