Complaining

Exodus 15:24     "And the people complained against Moses saying, 'What shall we drink?' "
Exodus 17 :2 -3 "Therefore the people contended with Moses and said, 'Give us water, that we may 
                            drink.' So Moses said to them, 'Why do you contend with me? Why do you tempt 
                            the Lord?' 
                            And the people thirsted there for water and the people complained against Moses 
                            and said, 'Why is it you have brought us out of Egypt to kill us and our children
                            and our livestock, with thirst.?' "

Grumble, grumble, complaint, complaint, in fact moaning and groaning. The Israelites were never satisfied. God had used Moses to bring them out of Egypt, to freedom and all they could do was moan about him. They were totally ungrateful and were getting ready to stone Moses because of their feelings.
The main thing here, is that they were looking to man to provide not God. They had placed their trust in Moses instead of the Lord Almighty. Jeremiah 17:5 says, " Cursed is the man who trusts in man, and makes flesh is strength. Whose heart departs from the Lord." It is futile to put our trust in another person.

An important point here is that, it is so easy to put your trust in a pastor because, after all, he is our leader and like a shepherd, he leads us in our walk with Jesus. That is ok if we don't put him in God's place. We should always have trust and respect for our leader but it is God who supplies, not him or her. It is God who will take us into Heaven, not the pastor. It is God who died in our place and no one else.

Point two, is grumbling and complaining just separates us from people. Who wants to spend time with a moaning old and so? All that does is rob us of our peace. It does not build us up.
Philippians 2:14 tells us, "Do all things without complaining and disputing". And that includes having the mental thoughts and questions in our minds. Deal with these thoughts before they lead you further from God.

God deserves our praise, not our moans and groans and dis-satisfied comments. How can people see Jesus in us when we are angry, disputing things and generally being dis-satisfied. What if God were to moan and groan about us. He would find much more to grumble about in us. However, He gives Grace. We don't deserve it but we get it and honestly, we should be so grateful to Him that through Jesus, He sees no stain on us.