Shabach is to loudly give adoration to God in the form of testimony. Psalms 145:4; “one generation shall praise (Shabach) Your works to another, and shall declare Your mighty acts.” Verses 6, 7; “Men shall speak of the might of Your awesome acts, and I will declare Your greatness. They shall utter the memory of Your great goodness, and shall sing of Your righteousness.” Verses 10-12; “All Your works shall praise (Yadah) You, 0 Lord, and Your saints shall bless You. They shall speak of the glory of Your kingdom, and talk of Your power, to make known to the sons of men His mighty acts, and the glorious majesty of His kingdom.” Go to your Bible and read all of Psalm 145.
The Father’s lovingkindness is expressed in what He has done, what He is doing, and what He will do so that we should say as the psalmist: “Because Your lovingkindness is better than life, my lips shall praise (Shabach) You,” Psalm 63:3.
Over and over again we are told to shout, to be loud.
Psalm 5:11; “But let all those rejoice who put their trust in You; let them ever shout for joy, because You defend them; let those also who love Your name be joyful in You.”
Psalm 32:11; “Be glad in the Lord and rejoice you righteous; and shout for joy, all you upright in heart.”
Psalm 17:1; “Oh clap your hands, all you peoples! Shout to God with the voice of triumph!”
Psalm 132:13-16; “For the Lord has chosen Zion (we, the church are Zion); He has desired it for His dwelling place: “This is My resting place forever; here I will dwell, for I have desired it. I will abundantly bless her provision; I will satisfy her poor with bread. I will also clothe her priests with salvation, and her saints shall shout aloud for joy.”
Do you understand why we should be loud?
Ezra 3:10-13: “When the builders laid the foundation of the temple of the Lord, the priests stood in their apparel with trumpets, and the Levites, the sons of Asaph, with cymbals, to praise the Lord, according to the ordinance of David King of Israel. And they sang responsively, praising and giving thanks to the Lord: For He is good, for His mercy endures forever toward Israel. Then all the people shouted with a great shout, when they praised the Lord, because the foundation of the house of the Lord was laid. But many of the priests and Levites and heads of the Father’s houses, old men who had seen the first temple, wept with a loud voice when the foundation of this temple was laid before their eyes. Yet many shouted aloud for joy, so that the people could not discern the noise of the shout of joy from the noise of the weeping of the people, for the people shouted with a loud shout, and the sound was heard afar off”
Consider this, we do not shout to receive joy but, because of what the Father has done we have joy and shout. Read Psalm 98.