It would be ignorant to pretend needs did not exist. Everybody has needs for themselves, and it is not considered greedy to tend to them. Some needs may simply seem out of one's reach, so it is taken to God, and when it is not met in the way one envisions it, the question arises:

This seemingly small doubt is vastly prevalent and runs through many minds, Christian and non alike. The act of asking God for something is, in itself, an important part of depending on God. It admits that there is something one cannot do or cannot acquire alone. Bringing our needs and wants to God is good, and we are even encouraged to do so.

Jesus Christ tells us that if we ask the Lord for something, it will be given to us. The average interpretation of this is incomplete, however, and leads one to the doubt previously mentioned. We are to bring our wants and needs to God, but not every single thing will be given freely as we desire. Unlike us, our prayers cannot be doubtful; they must be in pure faith. When we come to God in prayer, we have to KNOW that God has the power to do whatever we may ask Him.

Not that God's power is limited to us believing in Him, but it pleases Him when one truly places their faith in Him. God can do whatever one asks, and loves to bestow upon us gifts and blessings, and unhindered faith is what can get one to that point.

In addition to that, God is timeless, ageless, and omnipotent. He knows the past, He is in the present with us, and knows the future. When one of us asks Him for something, it must be kept in mind that He is our Heavenly Father and will approach us as His children.

A father would never give his child a stone when asked for a piece of bread, because it would harm the child, and the father knows this. Just the same, God has seen the future, knows every aspect of every one of us, and knows what is good and bad for us; He knows this to a much greater degree than we could ever know ourselves, because we are limited to our knowledge based on past and external experience. If one prays for something, and God denies it, it is for a good reason. God will not give us something which will hurt us, no matter how great it may seem to us at the time.