Nehemiah 13:1-3 (KJV)
1 On that day they read in the book of Moses in the audience of the people; and therein was found written, that the Ammonite and the Moabite should not come into the congregation of God for ever;
2 Because they met not the children of Israel with bread and with water, but hired Balaam against them, that he should curse them: howbeit our God turned the curse into a blessing.
3 Now it came to pass, when they had heard the law, that they separated from Israel all the mixed multitude.
Isaiah 55:11 (KJV)
11 So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.
Defined: Praise "...comes from the Latin pretium, 'price,' or 'value,' and may be defined generally as an ascription of value or worth. Praise may be bestowed upon unworthy objects or from improper motives, but true praise consists in a sincere acknowledgment of a real conviction of worth. Its type may be seen in the representation given in the Apocalypse of the adoration of God and of the Lamb, which is inspired by a sense of their worthiness to be adored (Rev 4:11; 5:12)."
(see International Standard Bible Encyclopedia)
Revelation 4:11 (KJV)
11 Thou art worthy, O Lord, to receive glory and honour and power: for thou hast created all things, and for thy pleasure they are and were created.
Revelation 5:12 (KJV)
12 Saying with a loud voice, Worthy is the Lamb that was slain to receive power, and riches, and wisdom, and strength, and honour, and glory, and blessing.
Matthew 9:13 (KJV)
13 But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
Matthew 12:7 (KJV)
7 But if ye had known what this meaneth, I will have mercy, and not sacrifice, ye would not have condemned the guiltless.
1) Praise is a Sacrifice
Jeremiah 17:26 (KJV)
26 And they shall come from the cities of Judah, and from the places about Jerusalem, and from the land of Benjamin, and from the plain, and from the mountains, and from the south, bringing burnt offerings, and sacrifices, and meat offerings, and incense, and bringing sacrifices of praise, unto the house of the Lord.
Jeremiah 33:11 (KJV)
11 The voice of joy, and the voice of gladness, the voice of the bridegroom, and the voice of the bride, the voice of them that shall say, Praise the Lord of hosts: for the Lord is good; for his mercy endureth for ever: and of them that shall bring the sacrifice of praise into the house of the Lord. For I will cause to return the captivity of the land, as at the first, saith the Lord.
Hebrews 13:15 (KJV)
15 By him therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name.
2) Is there a need for praise? Yes
Psalm 61:8 (KJV)
8 So will I sing praise unto thy name for ever, that I may daily perform my vows.
Psalm 119:164 (KJV)
164 Seven times a day do I praise thee because of thy righteous judgments.
Psalm 145:1 (KJV)
145 I will extol thee, my God, O king; and I will bless thy name for ever and ever.
3) Praise is Spiritual Warfare!
2 Chronicles 20:21-22 (KJV)
21 And when he had consulted with the people, he appointed singers unto the Lord, and that should praise the beauty of holiness, as they went out before the army, and to say, Praise the Lord; for his mercy endureth for ever.
22 And when they began to sing and to praise, the Lord set ambushments against the children of Ammon, Moab, and mount Seir, which were come against Judah; and they were smitten.
2 Chronicles 20:22 (KJV)
22 And when they began to sing and to praise, the Lord set ambushments against the children of Ammon, Moab, and moun