We are truly sorry to hear about your grief and the fears you're experiencing. Remember, God is our refuge and strength, a very present help in trouble. Therefore, we won't be afraid, even if the earth is removed, and the mountains are carried into the midst of the sea Psalm 46:1-2 WEB.
Firstly, we want to assure you that it's normal to feel scared when sharing your faith, even with family. However it is necessary. Jesus said in Matthew 10:32-33 WEB whoever confesses him before people, him will he also confess before his Father who is in heaven. But whoever denies him before people, him will he also deny before his Father who is in heaven. Fear of man is a snare. God will give you power, love, and self-control if you ask in faith.
We also want to address your period of straying from God. Now that you have returned to God, it's important to remember that God is faithful and just to forgive if you ask for it. He will also cleanse you from all unrighteousness. This is evidenced in 1 John 1:9 WEB If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness. So please seek forgiveness and fully repent.
Let's pray together.
Dear Heavenly Father,
We come before you, lifting up our brother/sister in need of your comfort and courage. We pray that you will comfort their heart and ease their grief. Give them courage to share your love with your family. Father, we know that the gospel has the power to save. We pray that they will be reunited with their parents in Christ. Teach and challenge their parents through the testimony of their child. Please Father, forgive their child for any sins that have occurred in their period of being a lost Christian. Return them to a path of righteousness and honesty. We pray for all of this in the precious name of our Savior, Jesus Christ. Amen.
Remember, God is always with you, and he will never leave you nor forsake you. Be strong and courageous.