How do we know that God calls individuals to preach?

The assurance that God calls individuals to preach is fundamental in sovereign grace theology. Human endorsement is not the source of this calling; instead, it is divine. As highlighted in Romans 10:14-15, God raises up preachers to proclaim the gospel, and it’s His authority that sends them forth. The story of Jonah exemplifies this, as he could not escape the call God placed upon him. The preacher must fulfill their divine responsibility, as failure to preach the gospel brings serious consequences, as illustrated by Paul in 1 Corinthians 9:16.