There are several synonyms that can be used in place of the phrase "glory be to God in the highest." Some possible alternatives include "praise God on high," "honor and exalt the Lord," "glorify the Almighty," "lift up the name of God," and "give thanks to the Most High." Each of these phrases communicates a similar sentiment of praising and honoring God for His greatness and goodness. Whether used in a religious context or simply as an expression of gratitude and awe, these synonyms can help to convey the beauty and majesty of the divine.