In the first chapter of Hebrews we see answers to all of the arguments of those who refuse to believe in what the world calls the Trinity (that our God is a Triune Being! One God in three distinct Persons!) Let's looks at this chapter:
1 IN MANY separate revelations [each of which set forth a portion of the Truth] and in different ways God spoke of old to [our] forefathers in and by the prophets,
2 [But] in the last of these days He has spoken to us in [the person of a] Son, Whom He appointed Heir and lawful Owner of all things, also by and through Whom He created the worlds and the reaches of space and the ages of time [He made, produced, built, operated, and arranged them in order].
3 He is the sole expression of the glory of God [the Light-being, the out-raying or radiance of the divine], and He is the perfect imprint and very image of [God's] nature, upholding and maintaining and guiding and propelling the universe by His mighty word of power. When He had by offering Himself accomplished our cleansing of sins and riddance of guilt, He sat down at the right hand of the divine Majesty on high,
4 [Taking a place and rank by which] He Himself became as much superior to angels as the glorious Name (title) which He has inherited is different from and more excellent than theirs.
5 For to which of the angels did [God] ever say, You are My Son, today I have begotten You [established You in an official Sonship relation, with kingly dignity]? And again, I will be to Him a Father, and He will be to Me a Son? [2 Sam 7:14; Ps 2:7]
6 Moreover, when He brings the firstborn Son again into the habitable world, He says, Let all the angels of God worship Him.
7 Referring to the angels He says, [God] Who makes His angels winds and His ministering servants flames of fire; [Ps 104:4]
8 But as to the Son, He says to Him, Your throne, O God, is forever and ever (to the ages of the ages), and the scepter of Your kingdom is a scepter of absolute righteousness (of justice and straightforwardness).
9 You have loved righteousness [You have delighted in integrity, virtue, and uprightness in purpose, thought, and action] and You have hated lawlessness (injustice and iniquity). Therefore God, [even] Your God (Godhead), has anointed You with the oil of exultant joy and gladness above and beyond Your companions. [Ps 45:6,7] AMP
We see here two of the separate and distinct Persons within the Godhead! John 17:5 verifies that Jesus was with the Father in Heaven BEFORE He was born into the earth as a human being, capable of sin! He had no sin nature, as we did, but He was still capable of sin (a selfish decision to do things our own way, rather than God's way), or He could not have been tempted as we are (Hebrews 4:15)! Jesus said that Holy Spirit could not be sent from Heaven until HE returned to Heaven (John 16:7)! Now, in our time, God is present on the earth in the Person of Holy Spirit! Study these verses, meditating on them by asking Holy Spirit to teach you. As you do, you will develop complete faith in the Godhead (Father, Son, Holy Spirit), along with a working knowledge of the Word of God and the authority that He has given us through His Word! God's job is then to confirm the Word that WE speak into the earth! He delights in doing so! Amen! Here is Hillsong Worship with "What A Saviour":
Shalom in Him!
