How does the Gospel ensure that all of God's sheep will hear His Word?

The proclamation of the Gospel is the primary means through which God calls His elect unto Himself. Isaiah 62:1 emphasizes God's relentless pursuit of His sheep, promising that He will not rest until His righteousness and salvation are made known. This underscores a theological assurance that every one of God's chosen people will eventually hear the Gospel and be regenerated by the Holy Spirit. The parable of the lost sheep in Luke 15 highlights the individual care God has for each of His people, demonstrating that He actively seeks out those who belong to Him. Therefore, the steadfast commitment to preach the Gospel signifies God's unwavering effort to reach every last one of His sheep, culminating in their eventual salvation.