Ethan went on to speak of the blessings the Israelites who acknowledged and walked with God experienced. They had joy, exaltation, glory, strength, and security. "The joyful sound" ( Psalm 89:15, NASB) refers to the shout of joy God"s people uttered when they saw Him lifted up and honored (cf. 1 Samuel 4:5-6). [1] A better translation might be, "Happy the people who have learnt to acclaim thee" (NEB). "Our horn" ( Psalm 89:17) means "our strength." Ethan rejoiced that Israel"s king, who was her defense, belonged to God ( Psalm 89:18). [source][source][source]
"In many Jewish synagogues today, Psalm 89:15-18 are recited on their New Year"s Day after the blowing of the shofar." [2][source]