Prayer for Salvation and Faith

Good morning friends in Christ. I would like to ask you to pray for my son Gabriel Jr. and his girlfriend Vanessa. They are in the world with 5 children, they are not in the Word or with God. They want to be rich, that’s all they talk about most of the time. I am praying for their heart and minds to change. They live in San Antonio and I live in Tucson, sometimes I feel very lonely praying for them and I don't know if God listens to me. In Christ, Juana