They told the woman, "We no longer have faith in Jesus just because of what you told us. We have heard him ourselves, and we are certain that he is the Savior of the world!"
What we mean is that God was in Christ, offering peace and forgiveness to the people of this world. And he has given us the work of sharing his message about peace.
We have put our hope in the living God, who is the Savior of everyone, but especially of those who have faith. That's why we work and struggle so hard.
We know that Jesus Christ the Son of God has come and has shown us the true God. And because of Jesus, we now belong to the true God who gives eternal life.