The single most important activity of your life is to worship God. You were made for this – to offer your whole life, in all its parts, as a hymn of praise to the Lord. When the psalmist says: “Praise the Lord, O my soul; all my inmost being, praise His holy name” (Ps. 103:1), he is speaking as a spiritual athlete in peak condition; his entire life is unreservedly directed to the Lord in praise; whole-heartedness of devotion to God is his most obvious characteristic.