It is not our faith in God’s faithfulness, it is simply God is faithful. No matter what you do and no matter what this world system may come to, we must remember, God is faithful to His own. It is His perfect nature to be perfectly faithful.
Every child of God has the Holy Spirit living in them. Be a person who listens to the Holy Spirit and obeys the Holy Spirit. Surrender to God and say “yes” to the things He is asking you to do, and you will be that person who keeps in step with the Spirit.
You know you are God’s child. But, like all of God’s children, you have sinned since you received Christ. You grew up in a church environment of well meaning Christians, but, they were unknowingly, legalists. My friend, be encouraged! We love you, so listen.