God is glorified by songs of praise from a pure heart filled with love and devotion to Him.... Those who adhere strictly to the admonitions and instructions of God’s word, prayerfully seeking to know and do His righteous will, feel not the petty grievances daily occurring. The gratitude which they feel, and the peace of God ruling within, causes them to make melody in their hearts unto the Lord, and by words to make mention of the debt of love and thankfulness due the dear Saviour, who so loved them as to die that they might have life.—Testimonies for the Church 1:509.
God’s children are not to be subject to feelings and emotions. When they fluctuate between hope and fear, the heart of Christ is hurt; for He has given them unmistakable evidence of His love. He wants them to be established, strengthened, and settled in the most holy faith. He wants them to do the work He has given them; then their hearts will become in His hands as sacred harps every chord of which will send forth praise and thanksgiving to the One sent by God to take away the sins of the world.—Testimonies to Ministers, 518. RRe 247
While the earth was wrapped in the fire of destruction, the righteous abode safely in the Holy City. Upon those that had part in the first resurrection, the second death has no power. While God is to the wicked a consuming fire, He is to His people both a sun and a shield. Revelation 20:6; Psalm 84:11. Hvn 131
Sing aloud unto God our strength: make a joyful noise unto the God of Jacob. Take a psalm, and bring hither the timbrel, the pleasant harp with psaltery. Psalm 81:1-2. KJV