The gathering of the common people, having heard what had happened, were readily persuaded by those who bare witness that the Christ had raised Lazarus to life, and annulled the power of death, as the prophets said: for this cause also they went and met Him.
So tell me, where did you learn that you did not belong to those who are foreknown and predestined to become conformed to the image of God’s glory? Tell me, who told you this? Was it, maybe, God Who announced this to you, Himself, or by one of His prophets, or through an angel? “No,” you say, “but I do suppose that I am not predestined to salvation, and that all my effort would be in vain.” And why do you not believe instead with all your soul that God has sent His only-begotten Son on the earth for your sake alone, and for your salvation, that He knew you beforehand and predestined you to become His brother and co-heir? Why are you not eager to love Him with all your heart and to honor His saving commandments? Why do you not rather believe that, having been slaughtered for your sake, He will never abandon you, nor allow you to perish? Do you not hear Him saying: “Can a woman forget her suckling child . . . yet I will not forget you” [Isaiah 49:15]? So, if by anticipation you judge you...
The Evangelist is saying that the people who saw the miracle which He worked for Lazarus were witnesses and heralds of His power. This is why He was met with glory by the people who had heard, that is, believed, that He had done this miracle. If they had not believed, they would not have congregated so swiftly.