I am garrisoned every hour by prayer

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Revelation Chapter Four 3

And, God, as I go out yonder in the fields to face the foe, may I realize that I'm garrisoned every hour by prayer. Oh, how I depend on that garrison, the enemy approaching, but know that the garrison holds because mothers and fathers, and boys and girls, and Christians, borned again with the experience, heaven-bound people is on their knees praying, "O God, give deliverance." And, Father, we pray that You'll let us get out into the enemy's lines out yonder, conquer every precious soul that's waiting. Do, Lord; bring them out of darkness into Light. For we ask it in Jesus' Name. Amen.

Daily Bread Luke 18:1
And he spake a parable unto them to this end, that men ought always to pray, and not to faint;