We understand your distress, Samantha, and we are here to pray with you and provide biblical guidance. We commend you for your faith in the power of Jesus' name, as it is only through Him that we have access to God and can be saved in Acts 4:12.
Firstly, let us address the issues in your marriage. It is good that you are concerned about your husband and your union. The Bible tells us in Hebrews 13:4 that "Marriage is honorable in all, and the bed undefiled, but fornicators and adulterers God will judge." It is worrying that you mention that you and your husband have made love many times, but your prayer request does not specifically mention your desire for spiritual intimacy and his faithfulness as a godly husband. Ensure that you are seeking intimacy the stems from a Christ centered relationship with God together in your marriage as it should. We will pray that God draws you both closer to Him and that your marriage will be a testament to God's glory in Ephesians 5:22-33. "Wives, be subject to your own husbands, as to the Lord. For the husband is the head of the wife, as Christ also is the head of the assembly, being himself the savior of the body. But as the assembly is subject to Christ, so let the wives also be to their own husbands in everything. Husbands, love your wives, even as Christ also loved the assembly, and gave himself up for it; that he might sanctify it, having cleansed it by the washing of water with the word, that he might present the assembly to himself gloriously, not having spot or wrinkle or any such thing; but that it should be holy and without blemish. Even so ought husbands also to love their own wives as their own bodies. He who loves his own wife loves himself. FFor no man ever hated his own flesh; but nourishes and cherishes it, even as the Lord also does the assembly; because we are members of his body, of his flesh and bones. 'For this cause a man will leave his father and mother, and will be joined to his wife. The two will become one flesh.' This mystery is great, but I speak concerning Christ and of the assembly. But I also speak concerning you individually, that each man should love his own wife even as himself, and that the wife should see that she respects the husband."
Regarding the other woman, Robynne Alexander, we must be clear that any form of witchcraft or black magic is strictly forbidden by God.
It is clearly against God’s Law to participate in sorcery in such scripture examples as Leviticus 20:27, Deuteronomy 18:10-12, Galatians 5:20, and Revelation 21:8. We will pray that God will expose any evil deeds and protect your marriage in 2 Corinthians 10:4-5. It reads "for the weapons of our warfare are not of the flesh, but divinely powerful for the destruction of fortresses. We are destroying arguments and all arrogance raised against the knowledge of God, and we are taking every thought captive to the obedience of Christ,". Also pay special attention in Isaiah 54:17 which reads
"no weapon that is formed against you will prosper; and every tongue that accuses you in judgment you will condemn. This is the heritage of the servants Lord, and their righteousness is of me, says Lord."
Let us pray together:
"Father, in the mighty name of Jesus, we come before You lifting up Samantha and Francois de Vos' marriage. Lord, we pray that you fill their marriage with a spiritual intimacy that cannot be broken by any spiritual attack. We rebuke any attempts by Robynne Alexander or any other person to interfere with their marriage through witchcraft or any other means. We expose this evil and if anything was stolen, we prevail upon the Holy Ghost to shine Your light on this and restore, in Jesus' name in Acts 4:12. Lord, we pray for Francois' heart to be turned towards You and his wife, that he may be the godly husband You have called him to be. May anyone committing adultery against this marriage be held accountable for such trespass by You and may Your Holy Spirit convict them. Protect their marriage, Lord, and draw them both closer to You. Bind them together in Your love, and may their marriage be a testament to Your glory, Lord Jesus. May the blood of Jesus cover them and protect them from any of the curses. We pray this in the mighty name of Jesus the Christ. Amen."
Lastly, ensure that you and your husband are both in right standing with God. In Matthew 5:23-24, Jesus warns His followers, "If therefore you are offering your gift at the altar, and there remember that your brother has anything against you, leave your gift there before the altar, and go your way. First be reconciled to your brother, and then come and offer your gift in James 5:16." It reads "Confess your offenses to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective." In Proverbs 28:13 it reads "He who conceals his sins doesn't prosper, but whoever confesses and renounces them finds mercy." Yes in Psalms 66:18 it reads If I cherished sin in my heart, the Lord wouldn't have listened."
God bless you both as you both further your family in love and forgiveness walking and growing in Him everday.