Hebrews 4: 14-16 KJVProbably the earliest account of the disciples praying to the Father in the name of Jesus is recorded in Acts chapter 4, after Peter and John were threatened and warned not to teach in Jesus' Name by the High Priest, rulers, elders and scribes:
"Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.
For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need."
Acts 4: 29-31 KJVNotice how the disciples, praying with one accord (4:24), addressed God as "Lord" (= "LORD" or Adonai in Hebrew, the title for YHWH) in verse 24 and 29.
29 And now, Lord, behold their threatenings: and grant unto thy servants, that with all boldness they may speak thy word,
30 By stretching forth thine hand to heal; and that signs and wonders may be done by the name of thy holy child Jesus.
31 And when they had prayed, the place was shaken where they were assembled together; and they were all filled with the Holy Ghost, and they spake the word of God with boldness.
Acts 4:24 KJVIt is also noteworthy that the disciples referred to Jesus in their prayer as "thy holy child whom thou hast anointed" in verse 27, and "thy holy child Jesus" in verse 30.
24 And when they heard that, they lifted up their voice to God with one accord, and said, Lord, thou art God, which hast made heaven, and earth, and the sea, and all that in them is:
Brothers and Sisters, let us pray to Adonai YHWH our God, in the Name of His Holy Child, whom He has Anointed.