I am not sure how my reply does not specifically answer this question, even from the very first line.
The person of the Son of God [the Father] always existed in eternity past before the earth was ever formed, thus existed before mankind ever was called into existence. The name Jesus simply means JEHOVAH is Saviour. his name is found throughout the OT [H3444] - "yeshû‛âh", which is great for witnessing to Jews and Muslims with [for they always ask if Jesus is mentioned by name in the OT, and the answer is "Yes."]:
For instance see:
Genesis 49:18 KJB - I have waited for thy salvation, O LORD.
Exodus 14:13 KJB - And Moses said unto the people, Fear ye not, stand still, and see the salvation of the LORD, which he will shew to you to day: for the Egyptians whom ye have seen to day, ye shall see them again no more for ever.
2 Chronicles 20:17 KJB - Ye shall not need to fight in this battle: set yourselves, stand ye still, and see the salvation of the LORD with you, O Judah and Jerusalem: fear not, nor be dismayed; to morrow go out against them: for the LORD will be with you.
Jonah 2:9 KJB - But I will sacrifice unto thee with the voice of thanksgiving; I will pay that that I have vowed. Salvation is of the LORD.
Psalms 119:174 KJB - I have longed for thy salvation, O LORD; and thy law is my delight.
JEHOVAH Jesus, etc.
Total KJB Occurrences: 78
salvation, 65
Gen_49:18, Exo_14:13, Exo_15:2, Deu_32:15, 1Sa_2:1, 1Sa_14:45, 2Sa_22:51, 1Ch_16:23, 2Ch_20:17, Job_13:16, Psa_3:8, Psa_9:14, Psa_13:5, Psa_14:7, Psa_20:5, Psa_21:1, Psa_21:5, Psa_35:3, Psa_35:9, Psa_53:6, Psa_62:1-2 (2), Psa_62:6, Psa_68:19, Psa_69:29, Psa_70:4, Psa_74:12, Psa_78:22, Psa_88:1, Psa_89:26, Psa_91:16, Psa_106:2-4 (4), Psa_118:13-15 (3), Psa_118:21, Psa_119:123, Psa_119:155, Psa_119:166, Psa_119:174, Psa_140:7, Psa_149:4, Isa_12:2-3 (3), Isa_25:9, Isa_33:1-2 (2), Isa_49:6 (2), Isa_49:8, Isa_51:6, Isa_51:8, Isa_52:7, Isa_52:10, Isa_56:1, Isa_59:11, Isa_60:17-18 (2), Isa_62:1, Jon_2:9, Hab_3:8health, 3
help, 3
Psa_42:11, Psa_43:5, Psa_67:2
2Sa_10:11, Psa_3:2, Psa_42:5deliverance, 2
Psa_18:50, Isa_26:18saving, 2
Psa_28:8, Psa_67:2deliverances, 1
save, 1
Psa_44:4
welfare, 1
Psa_80:2
Job_30:15
no He was not a Son, until He became a man, And the Father was not a Father (individually) until Jesus became a son of man
Heb 1:5
For unto which of the angels said he at any time, Thou art my Son, this day have I begotten thee? And again, I will be to him a Father, and he shall be to me a Son?
otherwise Jesus is God who became a man yet was in Heaven while on earth