One of the great yet largely unknown hymns of the Church is Take My Life, and Let it Be. It was written by Frances R. Havergal, in February of 1874 and speaks of the Christian’s total consecration to God.
I thought of this hymn today while talking with someone and thought too how appropriate it was as I write today on the evening of the Feast of the Annunciation. For, in today’s reading at Mass we read:
Sacrifice or oblation you wished not,
but ears open to obedience you gave me.
Holocausts or sin-offerings you sought not;
then said I, “Behold I come. (Psalm 40:7-8)
Now this psalm refers especially to Christ, but also then to us; for it is not enough to be ritually observant. No indeed, Jesus has established a new manner of sacrifice. The priests of the Old Testament sacrificed something other than themselves: lambs, goats, turtledoves and so forth. But Jesus our High Priest sacrifices himself. In the New Testament, the priest and victim are one and the same.
Hence Psalm 40, above, declares that the sacrifice Jesus offered was not to kill an animal, but to obey, and offer himself. The same pattern is for us, who share in the royal priesthood of Christ.
While not all of us are ministerial priests who serve at the altar, all of us, by virtue of our baptism share in the royal priesthood. Hence we are to imitate Jesus, our high priest.
It is not enough for us to engage merely in ritual observance. In the end we must make the sacrifice of obedience, sacrificing our will, and wishes. Further, we must say with Jesus, “Behold I come.” That is to say, “I offer you the sacrifice of my own life, my mind, heart, will, strength, and body.”
St. Paul says, I urge you, brothers, in view of God’s mercy, to offer your bodies as livings sacrifices, holy and pleasing to God – this is your act of worship. (Rom 12:1). This is what we offer to God, the gift of our very selves.
Consider this as you meditate on one of the great hymns of the 19th Century. Frances Havergal speaks of how she came to write it:
I went for a little visit of five days….. (to Areley House)….. The last night of my visit after I had retired….; it was nearly midnight. I was too happy to sleep, and passed most of the night in praise and renewal of my own consecration; and these little couplets formed themselves, and chimed in my heart one after another till they finished with “Ever, Only, ALL for Thee!” 
And these are the words she wrote:
Take my life, and let it be consecrated, Lord, to Thee.
Take my moments and my days; let them flow in ceaseless praise.
Take my hands, and let them move at the impulse of Thy love.
Take my feet, and let them be swift and beautiful for Thee.
Take my voice, and let me sing, always, only, for my King.
Take my lips, and let them be filled with messages from Thee.
Take my silver and my gold; not a mite would I withhold.
Take my intellect, and use, every power as Thou choose.
Take my will, and make it Thine; it shall be no longer mine.
Take my heart, it is Thine own; it shall be Thy royal throne.
Take my love, my Lord, I pour at Thy feet its treasure store.
Take myself, and I will be ever, only, all for Thee.
Yes, all for thee Lord. The sacrifice I offer to you is more than my money, more than my time, the sacrifice I offer is my very self, in imitation of your Son. My it be so Lord, ever more truly so, that my sacrifice be whole and entire: ever, only all for thee.
Here is a modern version of this old hymn. The video links the words to vocations to the priesthood and religious life, but the hymn can surely refer to us all, whatever our state.