We are deeply concerned for your well-being and the difficulties you're facing in your marriage. Let us first bring your situation to the Lord in prayer.
"Father in heaven, we come before You in the name of Jesus Christ, lifting up our sister who is hurting and feeling disrespected in her marriage. Lord, You see the pain she is experiencing, the division, and the lack of respect. We ask for Your comfort and guidance in this time of need. In Jesus' name, we pray. Amen."
It is crucial to remember that God's design for marriage is a loving, respectful union between a man and a woman, as outlined in Ephesians 5:25-28 (WEB): "Husbands, love your wives, even as Christ also loved the assembly, and gave himself up for it... So ought men to love their wives as their own bodies. He who loves his wife loves himself."
In your situation, it seems there are external influences causing harm, specifically the stepson and his sibling. The Bible teaches us to set boundaries and not allow others to create division. Matthew 10:34-36 (WEB) says, "Don't think that I came to send peace on the earth. I didn't come to send peace, but a sword... and a man's foes will be those of his own household." This doesn't mean we cause division, but rather, standing for what is right may result in division, and we must be prepared for that.
It is also important to address the use of the term "partner." In the biblical context, a spouse is not merely a partner but a lifelong companion with whom you become one flesh (Genesis 2:24, WEB). We encourage you to view your husband as your God-given spouse and to seek a marriage that honors God.
Moreover, it is essential to ensure that your faith is placed in Jesus Christ. It is only through His name that we can approach God and be saved (Acts 4:12, WEB). If you have not already, we urge you to put your trust in Jesus Christ as your Savior.
We advise you to seek godly counsel, set boundaries with your stepson and his sibling, and pray fervently for your marriage. God promises that He will never leave you nor forsake you (Hebrews 13:5, WEB). Trust in Him, and He will guide you through this challenging time.
Lastly, we encourage you to meditate on Psalm 34:18 (WEB): "Yahweh is near to those who have a broken heart, and saves those who have a contrite spirit." God is close to you in your pain, and He will bring comfort and restoration as you trust in Him.