The Samaritan woman asks the townspeople if Jesus could be the Christ. They believe that He is based on her testimony. And then they spend two days with Him and believe even more based on His testimony.
Go and proclaim the Gospel - preach the good news to others. One will sow and another will reap. We don't know our role in the moment, but let us be faithful to God and call in our lives.
John 4:34-45
Jesus said to them, “My food is to do the will of him who sent me and to accomplish his work. Do you not say, ‘There are yet four months, then comes the harvest’? Look, I tell you, lift up your eyes, and see that the fields are white for harvest. Already the one who reaps is receiving wages and gathering fruit for eternal life, so that sower and reaper may rejoice together. For here the saying holds true, ‘One sows and another reaps.’ I sent you to reap that for which you did not labor. Others have labored, and you have entered into their labor.”
Many Samaritans from that town believed in him because of the woman's testimony, “He told me all that I ever did.” So when the Samaritans came to him, they asked him to stay with them, and he stayed there two days. And many more believed because of his word. They said to the woman, “It is no longer because of what you said that we believe, for we have heard for ourselves, and we know that this is indeed the Savior of the world.”
After the two days he departed for Galilee. (For Jesus himself had testified that a prophet has no honor in his own hometown.) So when he came to Galilee, the Galileans welcomed him, having seen all that he had done in Jerusalem at the feast. For they too had gone to the feast.