Today in my New Testament reading, I came across a passage in Acts chapter 4 that has caught my attention several times in the past.
This passage, from verses 24 to 31, records the account of the disciples' prayer for boldness and for the power of the Holy Spirit, after Peter and John returned from their interrogation by the Sanhedrin for healing the crippled man at Beautiful Gate.
Acts 4:24 - 31 ASV American Standard Version
And they, when they heard it, lifted up their voice to God with one accord, and said,O Lord, thou that didst make the heaven and the earth and the sea, and all that in them is:And when they had prayed, the place was shaken wherein they were gathered together; and they were all filled with the Holy Spirit, and they spake the word of God with boldness.
who by the Holy Spirit, [by] the mouth of our father David thy servant, didst say,
Why did the Gentiles rage, And the peoples imagine vain things?for of a truth in this city against thy holy Servant Jesus, whom thou didst anoint, both Herod and Pontius Pilate, with the Gentiles and the peoples of Israel, were gathered together, to do whatsoever thy hand and thy council foreordained to come to pass.
The kings of the earth set themselves in array,
And the rulers were gathered together,
Against the Lord, and against his Anointed:
And now, Lord, look upon their threatenings: and grant unto thy servants to speak thy word with all boldness,
while thy stretchest forth thy hand to heal; and that signs and wonders may be done through the name of thy holy Servant Jesus.
In the above prayer, the disciples refer to God (v24) as "Lord" (from the Hebrew tetragrammaton YHWH) in verses 24, 26, and 29.
Also, note that they refer to the Lord Iesus as "Anointed" in verses 6 (a quotation from Psalm 2:1 - 2), and "thy holy Servant" in verses 27 and 30.