St. Patrick's Breastplate (ca. 389-461 AD.)

I bind unto myself today the power of God to hold and lead, His eye to watch, His might to stay, His ear to hearken to my need: the wisdom of my God to teach, His hand to guide, His shield to ward; the Word of God to give me speech, His heavenly host to be my guard.
Christ be with me, Christ within me, Christ behind me,
Christ before me, Christ beside me, Christ to win me,
Christ to comfort me and restore me, Christ beneath me,
Christ above me, Christ in the hearts of all that love me,
Christ in the mouth of friend and stranger.
I bind unto myself the Name, the strong Name of the Trinity, by invocation of the same, the Three in One, and One in Three, of Whom all nature hath creation; Eternal Father, Spirit, Word: praise to the Lord of my salvation, salvation is of Christ the Lord. Amen.
I bind myself to God's power to guide me, God's might to uphold me, God's wisdom to teach me, God's Eye to watch over me, God's Ear to hear me, God's way to lie before me, God's shield to shelter me, God's host to secure me...Against the snares of demons, against the seductions of vices, against the lusts of nature, against everyone who meditates injury to me, whether far or near, few or many.