Can God replace man?

Text:1sam 15:11
  “I am sorry that I ever made Saul king, for he has not been loyal to me and has refused to obey my command.” Samuel was so deeply moved when he heard this that he cried out to the Lord all night.

Memorize: 1sam 16:1
  Now the Lord said to Samuel, “You have mourned long enough for Saul. I have rejected him as king of Israel, so fill your flask with olive oil and go to Bethlehem. Find a man named Jesse who lives there, for I have selected one of his sons to be my king.”

MESSAGE:
   I got to understand by the scriptures that it is possible God called a man and after a day God will throw him away that HE didn't need him again; but the problem is that others can't know when that happens; and that is why we have many Pastors,Bishops, arch bishops,Evangelist, Elders and deacons all over the world,because many God has terminated his appointment with them but we still see them doing ministries works,I wonder whose work are they doing?;God's, devil’s, self? But I know is not God's work again.
     Powerful messages,big tithe and many testimonies of people around about a man of God is not the scale to prove God is still with him, but what heaven is saying about him......
     You can still turn back from your own service to God’s service, Our God is merciful if you change and turn to him he will save you.

Note:
    David sinned God warned him but saul was not warned, your heart and focus about God's work will determine how much mercy you will receive;Self was the focus of saul(1sam 15:12),so mercy disappeared from him.

Prayer:
1. Whatever have done that terminated mercy over my life; Oh Lord let mercy be renewed in my life.
2. Let the blood of Jesus visit my foundation for repositioning in jesus name.
3. Every men of God that you have abandoned,in your mercy restore them before they mislead others.