“Behold, the Lord God shall come with a strong hand, and His arm shall rule for Him; behold, His reward is with Him, and His work before Him. He will feed His flock like a shepherd; He will gather the lambs with His arm, and carry them in His bosom, and gently lead those who are with young.” Isaiah 40:10-11.
“The Lord reigns; let the peoples tremble! He dwells between the cherubim; let the earth be moved! The Lord is great in Zion, and He is high above all the peoples. Let them praise Your great and awesome name – He is holy.” Psalm 99:1-3.
This psalm is divided into three parts each ending in the words, “He is holy” with the last division ending in, “the Lord our God is holy.” The emphasis is on the reign of Christ which will be one of justice, equity, and righteousness, things which the world sorely lacks today, or ever has had.
“How beautiful upon the mountains are the feet of him who brings good news, who proclaims peace, who brings glad tidings if good things, who proclaims salvation, who says to Zion, ‘Your God reigns!’” Isaiah 52:7.
“Oh, sing to the Lord a new song! For He has done marvelous things; His right hand and His holy arm have gained Him the victory.” Psalm 98:1.
Unlike Psalm 97, which is a continuum of Psalm 96, Psalm 98 is a new song, as it says in the first verse “Oh, sing to the Lord a new song!” So Psalm 98 is a bit different, but is of the same theme carried throughout these three psalms; the return of Christ and His millennial reign.
“Multitudes, multitudes in the valley of decision! For the day of the Lord is near in the valley of decision. The sun and moon will grow dark, and the stars will diminish their brightness.” Joel 3:14-15.
“The Lord reigns; let the earth rejoice; let the multitude of isles be glad!” Psalm 97:1.
Psalm 97 is a continuum of Psalm 96 because the theme of the Lord Jesus’ return and reign is throughout both psalms. In fact some expositors mention that parts of Psalms 96, 97, 98, and 100 are taken from the psalm that King David wrote for the return of the Ark from the house of Obed-edom to the city of David, see 1 Chronicles 16:7-36.
“The people who sat in darkness have seen a great light, and upon those who sat in the region and shadow of death light has dawned.” Matthew 4:16.
“Oh, sing to the Lord [Yahweh] a new song! Sing to the Lord, all the earth. Sing to the Lord, bless His name; proclaim the good news of His salvation from day to day.” Psalm 96:1-2.
Three times the name of the Lord, Yahweh, is used. This is understood by many to mean that the entire Godhead is included in these verses; sing to the Lord, God the Father; sing to the Lord, God the Son; sing to the Lord, God the Holy Spirit.