Can I be involved in ministry, if I struggle with sin?

Every Christian is a Christian missionary, no matter what sort of work they do. We are all called to share the light and love of our wonderful Saviour with the lost people of the dark world. 

Now, some people think that they cannot and should not be in any direct mission work for God, if they are struggling with wilful, known sins.

It is true that, obedience to God is absolutely necessary for a God honouring Christian life and ministry. However, nobody is perfect. We all sin, whether the sin is considered to be big or small. There is no great Christian minister in the world, who never did any sin. We all sin wilfully, because we know that it is a sin, but we still do. Whether it is anger, pride or irritation or procrastination or negligence or idle talk, we all sin. Our sins may be different, but we all struggle with sin and we wish that we don't. The apostle Paul felt the same.

Romans 7:19 - For the good that I would I do not: but the evil which I would not, that I do.

20 Now if I do that I would not, it is no more I that do it, but sin that dwelleth in me.

21 I find then a law, that, when I would do good, evil is present with me.

22 For I delight in the law of God after the inward man:

23 But I see another law in my members, warring against the law of my mind, and bringing me into captivity to the law of sin which is in my members.

24 O wretched man that I am! who shall deliver me from the body of this death?

James 1:14 - But every man is tempted, when he is drawn away of his own lust, and enticed.

Now, should I wait until I get rid of all the so called big sins I know, before I share the Gospel with someone or teach the Biblical truths to others? In that case, we are all going to wait forever.  Nobody is going to be absolutely perfect on this side of heaven, but we are all supposed to be striving for perfection. The well-lived Christian life is a life of progression towards more Christ-likeness. 

The devil is extremely intelligent and cunning. When you are tempted to sin, he tells you, "this sin is okay. Everybody does it". And when you try to do something good for God, he says, "You are unworthy to do this ministry or teach others because you committed that sin that day". Remind yourself of what God's Word tells you. When you are tempted to sin, you should say "No" and we you are prompted by the Holy Spirit to do something good, you should count yourself worthy, because God counted you worthy. 

Genesis 3:1-11 - Now the serpent was more subtil than any beast of the field which the LORD God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?  

1 John 1:9 - If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

Romans 8:1 - There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit.