“Foolish talking, or jesting ... are not befitting.” Ephesians 5:4, American Standard Version.
Jesting, joking, and worldly conversation belong to the world. Christians who have the peace of God in their hearts, will be cheerful and happy without indulging in lightness or frivolity. While watching unto prayer, they will have a serenity and peace which will elevate them above all superfluities.—Testimonies for the Church 3:241.
The giddy laugh, the jesting, the joking, sickens the soul that is feeding on Christ. Cheap, foolish talk is painful to him.—Fundamentals of Christian Education, 457.
Lightness, jesting, and joking will result in barrenness of soul, and the loss of the favor of God.—Testimonies for the Church 2:236.
A mind that is intent upon having the prize, upon securing heaven, will reject with firm, determined purpose every attempt at wit and jest concerning religious things.—Messages to Young People, 266.
Let no low witticism escape your lips.—The Ministry of Healing, 491.
All frivolous words, all lightness and trifling, are enticements of the enemy to deprive you of spiritual strength. Brace yourselves against this evil, in the name of the God of Israel.... Trim your lamps, and keep them burning, that wherever you may go, you may reveal in speech and action precious rays of light.—Testimonies for the Church 9:133. RRe 237
Every question of truth and error in the long-standing controversy has now been made plain. The results of rebellion, the fruits of setting aside the divine statutes, have been laid open to the view of all created intelligences. The working out of Satan's rule in contrast with the government of God has been presented to the whole universe. Satan's own works have condemned him. God's wisdom, His justice, and His goodness stand fully vindicated. It is seen that all His dealings in the great controversy have been conducted with respect to the eternal good of His people and the good of all the worlds that He has created. “All Thy works shall praise Thee, O Lord; and Thy saints shall bless Thee.” Psalm 145:10. Hvn 128
It is better to hear the rebuke of the wise, than for a man to hear the song of fools. For as the crackling of thorns under a pot, so is the laughter of the fool: this also is vanity. Ecclesiastes 7:5-6. KJV