You have to be clean on the inside. Rick Warren says: “God uses all kinds of people. He uses shy people. He uses outgoing people. He uses people from all different races, ages, stages of life, and backgrounds. He uses men and women. God will use plain vessels, and he’ll use ornate vessels. He’ll use big vessels and small vessels. But there is one thing that God will not use: He will not use a dirty vessel. You have to be clean on the inside.

How do you do that? How do you purify yourself? You do it through a simple word: confession. Augustine said, “The confession of bad works is the beginning of good works.” The Bible says in 1 John 1:9, “If we confess our sins to God, he will keep his promise and do what is right: he will forgive us our sins and purify us from all our wrongdoing” (GNT).

The word confess in Greek is the word homologeo. Homo means “same,” and logeo means “to speak.” So homologeo literally means “to speak the same about my sin that God does.” It means you agree with him: “God, you’re right. It wasn’t a faux pas. It wasn’t a mistake. It was a sin. It was wrong.” It doesn’t mean you try to bargain with God (“I’ll never do it again”). It doesn’t mean you try to bribe God (“I promise to read my Bible every day if you’ll forgive me”).

You just admit it.

That may seem too simple to you. You may say, “All I’ve got to do is admit it, and God will forgive me?” Yes! It’s called grace!

Here’s what I suggest you do if you really want to be used by God: Take time this week to sit down with a pen and a pad of paper, and say, “God, what’s wrong in my life? Show me. I’m going to write it down, and I’m going to admit it. I’m going to confess it to you.” Then, when God gives you an idea, write it down.

The first time I did this, I thought I was going to write a book! And I’ve done this many times since. Make a list, and then write 1 John 1:9 over it and say, “God, I admit these to you. These are wrong. I don’t want them in my life.” Ask God to cleanse your life. God will forgive you!”

Source: Rick Warren, Daily Hope: ‘You Don’t Have to Be Perfect to Be Used By God’ (accessed 29/09/2018)