Final answer:
According to John 4:23, those who will worship the Father in the spirit and in truth are the ones who believe in God, the Last Day, and perform good works.
Step-by-step explanation:
According to John 4:23, the ones who will worship the Father in the spirit and in truth are those who believe in God and the Last Day, and perform good works. This verse is referring to those who have faith and live according to the teachings of their respective religious beliefs. It emphasizes the importance of genuine worship and sincerity in one's relationship with God.