The fruit of the Holy Spirit cannot be faked. When we are truly born again, grafted into Messiah, we take on his nature. Our behavior will be new bearing the fruit of righteous behavior. Just because a person goes to church does not mean they are born again. Just because a person is a pastor doesn’t mean they are born again.
Now there was a man, a Pharisee named Nicodemus, a ruler of the Jewish people. He came to Yeshua at night and said, “Rabbi, we know that You, a teacher, have come from God. For no one can perform these signs which You do unless God is with Him!” Yeshua answered him, “Amen, amen I tell you, unless one is born from above, he cannot see the kingdom of God.” “How can a man be born when he is old?” Nicodemus said to Him. “He cannot enter his mother’s womb a second time and be born, can he?” Yeshua answered, “Amen, amen I tell you, unless one is born of water and spirit, he cannot enter the kingdom of God. What is born of the flesh is flesh, and what is born of the Spirit is spirit.”
John 3:7 Do not be surprised that I said to you, ‘You all must be born from above. The wind blows where it wishes and you hear its sound, but you do not know where it comes from or where it goes. So it is with everyone born of the Spirit.” John 3:1-8 TLV
Watch out for false prophets, who come to you in sheep’s clothing but inwardly are ravenous wolves. You will recognize them by their fruit. Grapes aren’t gathered from thorn bushes or figs from thistles, are they? Even so, every good tree produces good fruit, but the rotten tree produces bad fruit. A good tree cannot produce bad fruit, nor can a rotten tree produce good fruit. Every tree that does not produce good fruit is chopped down and thrown into the fire. So then, you will recognize them by their fruit. Matthew 7:15-20 TLV