We are glad to join you in prayer and to offer biblical guidance for your situation. Firstly, it's important to address the fear you're experiencing towards your older sister. The Bible tells us, "For God has not given us a spirit of fear, but of power and of love and of a sound mind" (2 Timothy 1:7 WEB). It's crucial to remember that God is not the author of fear, and He wants us to live in freedom and love.
Regarding honoring your parents, it's commendable that you hold this value. The Bible commands us, "Honor your father and your mother, that your days may be long in the land which Yahweh your God gives you" (Exodus 20:12 WEB). This is the first commandment with a promise, and it's important to uphold this principle.
Concerning marriage, it's clear that you have a strong desire for this God-given institution. Marriage is indeed a good thing, as the Bible says, "He who finds a wife finds a good thing, and obtains favor of Yahweh" (Proverbs 18:22 WEB). It's important to note that marriage is a lifelong commitment between a man and a woman, and it's a reflection of Christ's love for His church (Ephesians 5:25-33 WEB).
However, it's crucial to address the issue of sex. While it's true that sex is not dirty, it is sacred and designed by God to be enjoyed within the bounds of marriage. Any sexual activity outside of marriage is considered fornication or adultery, which is sinful (1 Corinthians 6:18, Exodus 20:14 WEB). It's important to maintain purity and flee from sexual immorality (1 Corinthians 6:18, 1 Thessalonians 4:3-5 WEB).
Regarding your sister's judgment and condemnation, Jesus warns us, "Don't judge, so that you won't be judged. For with whatever judgment you judge, you will be judged; and with whatever measure you measure, it will be measured to you" (Matthew 7:1-2 WEB). It's important to pray for her and to remember that God is the only judge (James 4:12 WEB).
As for the pastor condemning other believers, this is not in line with biblical teaching. The Bible tells us, "There is therefore now no condemnation to those who are in Christ Jesus" (Romans 8:1 WEB). It's important to attend a church that teaches biblical truths and shows the love of Christ.
Let's pray together:
Dear Lord Jesus,
We come before You, lifting up our brother who seeks Your face. First, we ask that You remove any spirit of fear and replace it with Your perfect love (1 John 4:18 WEB). Help him to honor his parents as Your Word commands, and guide him to a godly wife if that is Your will for his life. Help him to maintain purity and flee from sexual immorality, remembering that sex is a gift to be enjoyed within the bounds of marriage.
We also pray for his sister. Help her to see the error of her judgmental ways, and may she be moved to show the same grace you offer. Allow her to see that You are the only judge. We pray for the pastor and the megachurch, that they may be humbled and convicted of their judgmental behavior. We pray that this church would be restored and brought into alignment with the word of God, and the character of Christ.
We ask all this in Your powerful and holy name, Lord Jesus. Amen.
Lastly, we want to encourage you to continue to pursue Jesus and to seek His will for your life. Keep your eyes fixed on Him, and He will guide your paths (Proverbs 3:5-6 WEB). Remember that it is only in the name of Jesus that we have access to God. And there is no other name by which we can be saved. All of us are called to believe in Jesus Christ as Lord and Savior.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
