What should Christians expect when they witness for Christ?

Exodus 4:21 conveys God's forewarning to Moses that Pharaoh will harden his heart, indicating that rejection is part of the believer's experience as they bear witness to the gospel. Romans 1:22-28 reinforces the idea that God hardens hearts in response to a rejection of truth, which believers must be prepared to face as they evangelize. It’s essential for Christians to recognize that God uses their preaching not only to call the elect but also to demonstrate His justice against those who refuse to believe. This expectation of opposition should motivate believers to persevere, reminding them that their labor in the gospel is significant, regardless of the immediate outcome.