עֹשֶׂ֤ה ׀ שָׁ֘מַ֤יִם וָאָ֗רֶץ אֶת־הַיָּ֥ם וְאֶת־כָּל־אֲשֶׁר־בָּ֑ם הַשֹּׁמֵ֖ר אֱמֶ֣ת לְעוֹלָֽם׃
여호와는 천지와 바다와 그 중의 만물을 지으시며 영원히 진실함을 지키시며
Rashi
Who keeps truth forever To the end of many generations, He fulfills and keeps the truth of His promise.
Radak
עושה שמים."who made heaven": In Him it is fitting to trust, for He makes everything and has the power to elevate and humble, and to do with His creations as He wills. "Earth" refers to the dry land, thus he mentioned the sea as well. The meaning of ואת כל אשר בם. "and all that is in them" is related to the three mentioned elements: in the heavens, the angels and the great hosts, and the seven ministers; on the earth, the animals and birds; and in the sea, the great sea creatures and all living beings that move therein. He fulfills the needs of all of them. He is the one who keeps truth forever, meaning He keeps His promises for a long time, as He did for Israel. He promised to bring them out of exile, and after they had been there for a long time, until all the nations despaired of their redemption, He brought them out. Thus, you see that He alone is worthy of trust.
Ibn Ezra
"He who makes" - the meaning is that God can do all He desires, for He is the Maker of Heaven and Earth, the Seas and All that is in Them. "Heavens" - these are the angels, and the great host are the attendants [of God], and on the earth [there are] the birds, animals, and humans, and in the sea [there are] great creatures.