two trumpets.

2 Kings 12:13
However, the money brought into the house of the LORD was not used for making silver basins, wick trimmers, sprinkling bowls, trumpets, or any articles of gold or silver for the house of the LORD.

2 Chronicles 5:12
all the Levitical singers--Asaph, Heman, Jeduthun, and their sons and relatives--stood on the east side of the altar, dressed in fine linen and playing cymbals, harps, and lyres, accompanied by 120 priests sounding trumpets.

of a whole piece

Exodus 25:18, 31
And make two cherubim of hammered gold at the two ends of the mercy seat. . . .

Ephesians 4:5
one Lord, one faith, one baptism;

the calling

Numbers 10:7
To convene the assembly, you are to sound long blasts, not short ones.

Psalm 81:3
Sound the ram's horn at the New Moon, and at the full moon on the day of our Feast.

Psalm 89:15
Blessed are those who know the joyful sound, who walk, O LORD, in the light of Your presence.

Isaiah 1:13
Bring your worthless offerings no more; your incense is detestable to Me--your New Moons, Sabbaths, and convocations--I cannot endure iniquity in a solemn assembly.

Hosea 8:1
Put the trumpet to your lips! An eagle comes against the house of the LORD, because they have transgressed My covenant and rebelled against My law.

Joel 1:14
Consecrate a fast; proclaim a solemn assembly! Gather the elders and all the residents of the land to the house of the LORD your God, and cry out to the LORD.