Praise the Lord - Psalm 100:4

Great encouragement is given us, in worshipping God, to do it cheerfully.

If, when we strayed like wandering sheep, he has brought us again to his fold, we have indeed abundant cause to bless his name. The matter of praise, and the motives to it, are very important. 

Know what God is to you. 
Know it; consider and apply it, then you will be more close and constant, more inward and serious, in his worship. 
                                                                                                                                                      adapted from Matthew Henry's Concise Commentary