There are favor and blessings for unbelievers who live with or are around believers who love and obey YAHWEH. Because believers are blessed, they bring or cause blessings to fall upon any who live with or do business with them.
Genesis 30:25-27 And it came to pass, when Rachel had born Joseph, that Jacob said unto Laban, Send me away, that I may go unto mine own place, and to my country. Give me my wives and my children, for whom I have served thee, and let me go: for thou knowest my service which I have done thee. And Laban said unto him, I pray thee, if I have found favour in thine eyes, tarry: for I have learned by experience that the LORD hath blessed me for thy sake. https://bible.com/bible/1/gen.30.27.KJV
Genesis 39:1-5 And Joseph was brought down to Egypt; and Potiphar, an officer of Pharaoh, captain of the guard, an Egyptian, bought him of the hands of the Ishmeelites, which had brought him down thither. And the LORD was with Joseph, and he was a prosperous man; and he was in the house of his master the Egyptian. And his master saw that the LORD was with him, and that the LORD made all that he did to prosper in his hand. And Joseph found grace in his sight, and he served him: and he made him overseer over his house, and all that he had he put into his hand. And it came to pass from the time that he had made him overseer in his house, and over all that he had, that the LORD blessed the Egyptian’s house for Joseph’s sake; and the blessing of the LORD was upon all that he had in the house, and in the field. https://bible.com/bible/1/gen.39.1.KJV
1 Corinthians 7:13-14 And if any woman has an unbelieving husband and he consents to live with her, she should not leave or divorce him. For the unbelieving husband is set apart (separated, withdrawn from heathen contamination, and affiliated with the Christian people) by union with his consecrated (set-apart) wife, and the unbelieving wife is set apart and separated through union with her consecrated husband. Otherwise, your children would be unclean (unblessed heathen, outside the Christian covenant), but as it is they are prepared for God [pure and clean]. https://bible.com/bible/8/1co.7.13.AMPC