My mouth will speak in praise of the Lord. Let every creature praise his holy name forever and ever.
I love the songs of the birds and each one has his own. Every day they sing the same song...the one given them by their Creator...and they sing, regardless.
Speaking and singing praise to God is an act of will for humans but many times life punches us and the only thing out of our mouths are complaints and curses instead. David MADE praise come from his lips and in his songs (psalms), he encouraged others to do the same. I must praise God, too...forever and ever, regardless.