Acts 4:1-12 / John 21:1-14
To be filled with something can be quite easily understood in physical and material terms - a cup that is filled with water, a flower pot that is filled with soil, or even a room that is filled with people.
To be filled with something would probably mean that we can see it, comprehend it, measure it or count it and give an empirical value to it.
But what does it mean to be filled with the Holy Spirit? It would be difficult to describe because there is no measurement for it.
And what does it mean when a person is filled with the Holy Spirit? What would be the means of measurement for it, if there is any?
In the 1st reading, we heard that Peter and John were arrested by the authorities and they were questioned by them.
And then it said that Peter filled with the Holy Spirit began to address them. And what Peter said was indeed Spirit-filled - clear, concise, precise, with no anger or sarcasm, and no accusation or judgement.
And that already tells us what it means to be filled with the Holy Spirit.
To be filled with the Holy Spirit would mean to speak Spirit-filled words, which would in turn fill others with truth and goodness.
Because from what fills our hearts, our mouths must speak so as to fill others.
May the Holy Spirit fill our hearts, so that we will speak and live and move and have our being in the Holy Spirit.