“Jesus answers, and says to them, This is the work of God, that ye believe to him, whom he sent.”
The question is: “What shall we do, that we work the works of God?” Just as in Jesus’ day when He walks the earth, people ask and argue this question every day. Some people debate while others actually denigrate others’ ideas of what it means to “work the works of God.”
“And now dwelleth faith, hope, charity, these three; but the most of these is charity.” (1 Corinthians 13:13) Paul answers the question, “What shall we do, that we work the works of God” with a strong reminder that without charity, we are nothing.
I’ve actually heard people downplay the value of love, spouting that holiness is the key to God. Jesus, I believe, agrees except that He says that without love, holiness is of no value because without love, there is no holiness.