During worship, they can say a lot of similar things but mostly, they say what you want to express to and before, your God. There are no specific rules about the use of flags. It is well to work out for yourself a kind of language but the real key is always to keep the flag moving.
The movement of the flag should follow the rhythm of the music, echo the sentiments of the song but most importantly, always follow the leading of the Holy Spirit.
Sometimes the words of the song do not speak to me immediately and I might start a song with two colours then find I need to change or even put one flag down. Not all songs require two flags, some are better expressed with one - or even three!
Note the mood and tempo of the music;
An up tempo beat calls for similarly vigorous movement
A slow, contemplative song needs smooth, gentle movements that echo the mood.
On occasion, with a slow song I waft the flag horizontally, so slowly it barely keeps afloat, thus representing the presence of the Holy Spirit in the meeting place. In the early days, I found this quite a challenge but then I found the Spirit was keeping me steady and now I can ‘pirouette’ for minutes at a time without getting dizzy!
There have been times when the use of flags has resulted in a very tangible feeling of the presence of the Spirit to the joy and enrichment of all! Hallelujah!
During this you will notice a few moves:
At the start: I dedicate the flags to the Lord. In this case by bowing before the alter
Here I am: sweep flags across my front, crossing my arms
Here I am, knowing I’m a sinful man: turns away in shame
Covered by the blood of the Lamb: flag goes over the head, representing being covered by God
Since You laid down your life, The greatest sacrifice: drops flags from a height straight down to the floor
Majesty, Majesty: synchronous waves overhead, representing a glorifying of God
Sanctified by glory and fire: flag goes over the head, representing the sanctification
At the end of the music: flags come to rest in a downward flow and I adopt a position of reverence and humility
I generally select a colour or colours that are appropriate to the words of sentiment of the song
Thus if singing about
God’s Majesty, purple
The blood of the Lamb, red
The Holy Spirit, white
In this case I chose gold and silver to represent God’s majesty and Christ’s glory