But the heart must be first, else even the largest gifts and services are not acceptable.
"'Tis not thy work the Master needs, but thee,-- The obedient spirit, the believing heart." "A living sacrifice." A sacrifice is something really given to God, to be his altogether and forever.

We cannot take it back any more.

One could not lay a lamb on God's altar and then a minute or two afterward run up and take it off.

We cannot be God's to-day and our own to-morrow.

If we become his at all, in a sacrifice which he accepts, we are his always.
How can we present ourselves as a sacrifice to God?
By the complete surrender of our heart and will and all our powers to him.