"Nature's gladness awakened joy in the hearts of Israel and gratitude to the Giver of all good. The grand Hebrew psalms were chanted, exalting the glory and majesty of Jehovah. At the sound of the signal trumpet, with the music of cymbals, the chorus of thanksgiving arose, swelled by hundreds of voices: PP 538.3"
Both passages mention the use of trumpets in praising God. The EGW passage specifically mentions trumpets and cymbals, aligning with the instruments mentioned in Psalm 150:3.
"In the meetings held, let a number be chosen to take part in the song service. And let the singing be accompanied with musical instruments skilfully handled. We are not to oppose the use of instruments of music in our work. This part of the service is to be carefully conducted; for it is the praise of God in song. The singing is not always to be done by a few. As often as possible, let the entire congregation join.... GW 357.3"
The EGW passage encourages the use of musical instruments in worship. Psalm 150:3 explicitly calls for praising God with various instruments. The EGW passage is a direct application of the principle found in Psalm 150:3.
"The solemn ceremonies attending the removal of the ark had made a lasting impression upon the people of Israel, arousing a deeper interest in the sanctuary service and kindling anew their zeal for Jehovah. David endeavored by every means in his power to deepen these impressions. The service of song was made a regular part of religious worship, and David composed psalms, not only for the use of the priests in the sanctuary service, but also to be sung by the people in their journeys to the national altar at the annual feasts. The influence thus exerted was far-reaching, and it resulted in freeing the nation from idolatry. Many of the surrounding peoples, beholding the prosperity of Israel, were led to think favorably of Israel's God, who had done such great things for His people. PP 711.2"
The EGW passage discusses David's establishment of music in worship, which aligns with the general theme of praising God with instruments as described in Psalms 150:3. While not a direct quote, it reflects the same spirit of musical worship.
"As we returned to our homes by various ways, a voice praising God would reach us from one direction, and, as if in response, voices from another and still another quarter shouted: “Glory to God, the Lord reigneth!” Men sought their homes with praises upon their lips, and the glad sound rang out upon the still night air. No one who attended these meetings can ever forget those scenes of deepest interest. 1T 50.4"
Both passages emphasize the importance of praising God. The EGW passage describes a scene of widespread praise, reflecting the call to universal praise in Psalm 150:6.