Perhaps this is the most important reason to pray, God’s invitation to share with Him. He asks us to be a part of His Love, and in doing so He offers us an invitation to Fellowship with Him, He says, “Seek My Face!” The whole purpose of Christ is to bring us to the invitation of God’s Fellowship. But this is only one invitation. He also invites us to rest, “Casting all your anxiety upon Him, because He cares for you.” ( NAS). Prayer is an invitation to find strength and wisdom, “He give strength to the wearied, He strengthens the powerless>” ( Jerusalem Bible). God invites us to His protection and help, “I waited patiently for the LORD; and He inclined to me, and heard my cry. He brought me out of the pit of destruction, out of the miry clay; and he set my feet upon the Rock making my footsteps firm.” NAS)
Also read in its entirety . It is a prayer of God’s Help and Wisdom. In particular the ending, “God examine my heart, probe me and know my thoughts.” In prayer let this invitation of God to help and to examine you be Wisdom for your soul.
The final invitation of God is the call to lift up each other’s burdens and to be intercessors. This is expressed best in ; “Pray in the Spirit at all times and on every occasion. Stay alert and be persistent in your prayers for all believers everywhere.” All the time, Everywhere, in the Spirit, for EVERYONE!
7 Hear, O Lord, when I cry aloud;
be gracious to me and answer me!
40:1 I waited patiently for the Lord;
he inclined to me and heard my cry.
Psalm 40:2 (Listen
139:1 O Lord, you have searched me and known me!
2 You know when I sit down and when I rise up;
you discern my thoughts from afar.
3 You search out my path and my lying down
and are acquainted with all my ways.
4 Even before a word is on my tongue,
behold, O Lord, you know it altogether.
5 You hem me in, behind and before,
and lay your hand upon me.
6 Such knowledge is too wonderful for me;
it is high; I cannot attain it.
7 Where shall I go from your Spirit?
Or where shall I flee from your presence?
8 If I ascend to heaven, you are there!
If I make my bed in Sheol, you are there!
9 If I take the wings of the morning
and dwell in the uttermost parts of the sea,
10 even there your hand shall lead me,
and your right hand shall hold me.
11 If I say, “Surely the darkness shall cover me,
and the light about me be night,”
12 even the darkness is not dark to you;
the night is bright as the day,
for darkness is as light with you.
13 For you formed my inward parts;
you knitted me together in my mother’s womb.
14 I praise you, for I am fearfully and wonderfully made. 
Wonderful are your works;
my soul knows it very well.
15 My frame was not hidden from you,
when I was being made in secret,
intricately woven in the depths of the earth.
16 Your eyes saw my unformed substance;
in your book were written, every one of them,
the days that were formed for me,
when as yet there was none of them.
17 How precious to me are your thoughts, O God!
How vast is the sum of them!
18 If I would count them, they are more than the sand.
I awake, and I am still with you.
19 Oh that you would slay the wicked, O God!
O men of blood, depart from me!
20 They speak against you with malicious intent;
your enemies take your name in vain! 
21 Do I not hate those who hate you, O Lord?
And do I not loathe those who rise up against you?
22 I hate them with complete hatred;
I count them my enemies.