God already knows our heart, but in this portion of the prayer we may express them to God as a child to his parent. The most important part of this petition is the prior verse. We must be in God s Will to find an answer to our prayers. This includes not having sin in our lives, maintaining our prayer life and our daily devotions, being faithful in our church life, at our work, with our habits, and in our giving. We need to be specific as we prayer.
Prayer can change much.
It is a great mystery how this is so, but God knows and understands our wants, needs, and desires, and His great plan is accomplished in response to our prayers. This is God s Providence at work. We need to be tenacious in our prayer life. Then the one inside answers, Don t bother me. The door is already locked, and my children are with me in bed.