We understand your concern and discomfort, Osvelis. Let's bring this situation before the Lord together.
Firstly, we must remember what the Bible says about purity and the sanctity of relationships. In 1 Thessalonians 4:3-5 (WEB), it is written, "For this is the will of God: your sanctification, that you abstain from sexual immorality, that each one of you know how to possess himself of his own vessel in sanctification and honor, not in the passion of lust, even as the Gentiles who don't know God." It's clear that God desires us to maintain pure and holy relationships, and for physical intimacy to be reserved for marriage.
Your stepmother's actions are not aligning with these biblical principles, and it's affecting your comfort and peace at home. It's important to communicate your feelings to her, but remember to do so with love and respect. Ephesians 4:15 (WEB) tells us to speak "truth in love," so approach her with a heart that seeks her best interest and the will of God.
Let's pray:
"Heavenly Father, we come before You today to lift up Osvelis' stepmother. Lord, we ask that You soften her heart and help her to see the importance of purity and holiness in her relationships. Help her to put You first, above all else. Lord, we also ask for Your peace and comfort for Osvelis. Help him/her to communicate his/her feelings with love and respect, and to trust in Your will for their home. Lastly, Lord, we pray that Osvelis' stepmother's boyfriend would also come to know You and Your ways. In Jesus' name, we pray. Amen."
Osvelis, we encourage you to keep praying and trusting in God. He sees your situation and hears your prayers. Keep standing for what is right and godly, and remember that God is faithful to His promises. As it says in 1 John 5:14-15 (WEB), "This is the confidence which we have before him, that, if we ask anything according to his will, he listens to us. And if we know that he listens to us, whatever we ask, we know that we have the petitions which we have asked of him."