How doth Christ execute the office of king?

Answer

Christ executeth the office of a king, in subduing us to himself (), in ruling (), and defending us (), and in restraining and conquering all his and our enemies (; Psalm 110 throughout).

Read the 4 proof texts (KJV)

Acts 15:14-16: ¹⁴Simeon hath declared how God at the first did visit the Gentiles, to take out of them a people for his name. ¹⁵And to this agree the words of the prophets; as it is written, ¹⁶After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up:
Isaiah 33:22: For the LORD [is] our judge, the LORD [is] our lawgiver, the LORD [is] our king; he will save us.
Isaiah 32:1-2: ¹Behold, a king shall reign in righteousness, and princes shall rule in judgment. ²And a man shall be as an hiding place from the wind, and a covert from the tempest; as rivers of water in a dry place, as the shadow of a great rock in a weary land.
1 Corinthians 15:25: For he must reign, till he hath put all enemies under his feet.