Mark 14:7
The poor you will always have with you, and you can help them any time you want. But you will not always have me — the you will always have the poor is not an argument against caring for the poor (Deuteronomy 15:11 is the source text, and the context there is a command to be generous precisely because the poor are always present) but a statement about the specific, unrepeatable moment of Jesus' presence. The poor can be helped at any time; Jesus' presence in this body, in this moment, cannot be extended.