An answer to prayer is a personal introduction to God. To see the artist paint before your eyes until the canvas glows with beauty makes painting very real. To cry to God in trouble, and to see the very thing you asked for it, makes the Lord wondrously real.
Perhaps there is one day where you go away leaving your room in confusion and disarray. When you return you find it in perfect order. Your books are neatly piled; your scattered papers are orderly arranged; every article has found its proper place; a rose, a sprig of heliotrope adds beauty and fragrance to it all. You recognise the presence and thoughtfulness of a loved one. Thus it is in prayer.
To the man who cries to God in prayer, the doing of God which comes through prayer makes God so real and practical in his life that you cannot possibly convince him these things are chance, or accident, or anything else than the personal presence of his Lord working mighty works and deeds in his own life. He knows God as the prayerless man can never know Him, because he thus sees His direct and loving touch upon every interest of his life. The Lord, He is God.
2 Chronicles 33:13
Then Manasseh knew that the Lord he was God
- Excerpt taken from Might Prevailing Prayer - Wesley Duewel