How does a person know that he/she belongs to Christ? How can we know with certainty that we are saved? Jesus answers this question in this passage of John. Jesus speaks pointedly about the character of His sheep, those who belong to Him who possess eternal life (v. 28). Jesus first contrasts these with those who refuse to trust Christ (vv. 25-26) and then positively speaks of His sheep as those who hear His voice, whom He knows, who follow Him (v. 27).