Psalms 66:1-4

The psalmist, speaking for his nation, called the other nations to join in praise of God by shouting, singing, and speaking. In Psalms 66:1-12 he wrote in the first person plural, but in Psalms 66:13-20 he used the first person singular. God’s great acts made His enemies cringe before Him. "Feigned obedience" (Psalms 66:3, NASB) is hypocritical obedience. The psalmist meant that God’s enemies would pretend to obey Him because they feared His wrath, even if they did not really obey Him.