If you met with a prominent person whom you highly respect in order to ask for a favor, at first you might say, “It is an honor to meet you; I’ve heard so much about your generosity to our local community.” Upon leaving, you might say, “Thank you so much for seeing me and for considering my request.” In other words, you might begin with praise and conclude with thanksgiving.

You could also conduct a prayer meeting with God the same way: praise at the beginning and thanksgiving at the end. Praise and thanksgiving are found throughout Scripture in psalms and prayers. It is interesting that even some of the New Testament epistles begin with words of praise to God (2 Corinthians 1:3; Ephesians 1:3; 1 Peter 1:3). Others begin with thanksgiving to God for the spiritual progress of the recipients of the letter. Regardless of the order, praise and thanksgiving are consistent themes.

Remember to praise and thank God when you pray: praise for who He is, thanks for what He will do.

The measure of our spirituality is the amount of praise and thanksgiving in our prayer.
D. Martyn Lloyd-Jones