From "Shame Interrupted: How God Lifts the Pain of Worthlessness and Rejection" by Edward T. Welch, New Growth Press, 2012.
In Christ you have been drenched by the cleansing Spirit. You have been sent swimming in him. That certainly is enough to cleanse you. You have also been reclaimed as a living tabernacle. Where idols once reigned and tainted associations separated, the Spirit has come to stay. His holiness overcomes any uncleanness within you. The Holy Spirit cleanses you once and for all; you have gone from uncleanness to cleanness. Cleanness, however, can still be common and not holy. That’s why the Spirit’s residency is also important. It shows that God’s intent is to make you his own. You, who were once common and unclean, have now become holy and clean. Now, instead of contaminating others, you can touch them and somehow sanctify them. Your presence in the lives of other people is more powerful than you think. You can, in some real way, make them holy. Your presence announces God’s unique interest in the other person. I observed this on a human scale when I married. My parents did not meet my wife until a month after our wedding, but the moment they met her they loved her. My parents loved me; I loved my wife; so my parents loved my wife. They were linked to me; I was linked to her; so they were linked to her.
This does not mean that those who are linked to us immediately belong to Christ, but it does mean that they enjoy an enviable position. At the very least, they have daily opportunities to witness the Spirit within another person. In a real way they too have been set apart. The apostle Paul gave a concrete application of this. In ancient Israel there were strict taboos against marrying people outside Israel. Such a marriage brought pagan contamination into the home and defiled any Israelite. After Jesus ascended, the early church encountered similar relationships: one spouse put his or her faith in Jesus but the other one did not. A possible application of Old Testament principles to this situation was to advise the believer to divorce the unbeliever, thereby breaking the link to the unclean person. The apostle Paul, however, used different logic. If the unbeliever was willing to live with the believer, Paul advised the believer to stay because the believer—the holy one—can spread holiness to others in close association with him or her. With Christ in you, by way of the Holy Spirit, you can touch other people.
If any woman has a husband who is an unbeliever, and he consents to live with her, she should not divorce him. For the unbelieving husband is made holy because of his wife, and the unbelieving wife is made holy because of her husband. Otherwise your children would be unclean, but as it is, they are holy. (1 Corinthians 7:13–14) So get out there and start touching. This is the era of action. If you have said “I love you” to Jesus, you have all the benefits that come with your new relationship. You also have the responsibilities. In other words, you have purpose. You have a reason to live. You claim all the benefits of Jesus Christ and he claims you. Just as Jesus moved toward you in love, you move toward others on his behalf. And this is his commandment, that we believe in the name of his Son Jesus Christ and love one another, just as he has commanded us. Whoever keeps his commandments abides in God, and God in him. And by this we know that he abides in us, by the Spirit whom he has given us. (1 John 3:23–24) There is nothing burdensome in this purpose. It is hard but invigorating. Imagine that you are the new Isaiah. You have been purified by the King. He lives in you by his Spirit, and he gives you a mission.