The point was God states who are is children. Ref Born of God
The fruit of the Spirit or by their fruit are signs of true salvation. For those that proclaim faith in Jesus. Those that continue to sin have neither seen Jesus nor know Him though they may claim Him as Lord.
Jesus stated , Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven. Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name and in your name drive out demons and in your name perform many miracles?’ Then I will tell them plainly, ‘I NEVER knew you. Away from me, you evildoers!’
Satan had faith and the Sadducee's and Pharisees had works but no love.
Even works without love is nothing. as is written "I desire mercy not sacrifice"
1corth 13
If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. 2 If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. 3 If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.
4 Love is patient, love is kind. It does not envy, it does not boast, it is not proud. 5 It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. 6 Love does not delight in evil but rejoices with the truth. 7 It always protects, always trusts, always hopes, always perseveres.
However as individuals that proclaim faith in Jesus despite some people of other faiths calling us pagans worshiping a dead prophet and idolaters we know by the Spirit that dwells in us we are the true children of God and that Jesus lives. God states who His children are not man.