It is the expression of respect and gratitude to God, and is well summed up in the Psalmist words:
Serve the LORD with fear, and rejoice with trembling (Psalm 2.11)
Answer:
In the KJV Old Testament, the translators used the word "praise" for different words from the original manuscripts.
In the KJV Psalms 7:17, for example; we read: "I will praise the Lord according to His Righteousness: and will sing praise to the name of the Lord Most High."
The KJV translators used "praise" for two different words in this one passage. The Literal Bible says:
"I will thank Yahweh by His Righteousness, and praise the name of Yahweh Most High."
The word "thank" is:
"yadah [yaw-daw'] -- ...literally, to use (i.e. hold out) the hand; physically, to throw (a stone, an arrow) at or away; especially to revere or worship (with extended hands); intensively, to bemoan (by wringing the hands): KJV [translations of this word]-- cast(out), (make) confess(-ion), praise, shoot, (give) thank(-ful, -s, -sgiving)." (Strong's Definitions)
And "praise" in reference to His name in this passage, the word is:
"zamar [zaw-mar'] -- a primitive root [perhaps iden. with HSN2168 through the idea of striking with the fingers]; properly, to touch the strings or parts of a musical instrument, i.e. play upon it; to make music, accompanied by the voice; hence to celebrate in song and music: KJV-- give praise, sing forth praises, psalms." (Strong's Definitions)
In the KJV Isaiah 38:18 it says:
"For the grave cannot praise thee, death can not celebrate thee...".
The Literal Bible says:
"For not Sheol can thank You, {nor} death praiseYou...".
This "praise" is:
"halal [haw-lal'] -- ...to be clear (orig. of sound, but usually of color); to shine; hence, to make a show, to boast; and thus to be (clamorously) foolish; to rave; causatively, to celebrate; also to stultify: KJV-- (make) boast (self), celebrate, commend, (deal, make), fool(-ish, -ly), glory, give [light], be (make, feign self) mad (against), give in marriage, [sing, be worthy of] praise, rage, renowned, shine." (Strong's Definitions)
Just to share some of the meanings... they are many.
The word 'praise' appears 261 times in the KJV Bible.
The word 'praise' appears 259 times in the KJV Bible, and in the many other versions it is about the same.
stunned does not occur in the KJV Bible
The name "Kellie" does not appear anywhere in the KJV bible.
The name "Layneisha" does not appear anywhere in the KJV bible.
The name Ashlyn does not appear anywhere in the KJV bible.
The name Lindsey does not appear anywhere in the KJV bible.
The name "Sefire" is not found in the KJV/NKJV of the Bible.
The name "Jamal" does not appear anywhere in the KJV bible.
The phrase 'praise him' appears 18 times in the King James Version (KJV). It appears 23 times in the NIV so the count varies slightly depending on which translation you use.
There is no mention of Carole (or Carol) in the Bible.
The word "rua" does not appear anywhere in the English KJV bible.