1 Tim 6:13 I give thee charge in the sight of God, who quickeneth all things, and before Christ Jesus, who before Pontius Pilate witnessed a good confession; 14 That thou keep this commandment without spot, unrebukeable, until the appearing of our Lord Jesus Christ: 15 Which in his times he (Christ) shall shew, who (our heavenly father) is the blessed and only Potentate, the King of kings, and Lord of lords; 16 Who (our heavenly father below in 1 Cor 15:28) only hath immortality, dwelling in the light which no man can approach unto; whom no man hath seen, nor can see: to whom be honour and power everlasting. Amen.
1 Cor 15:28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.
Me: 1 Cor 15:28 corresponds with 1 Tim 6:13. Only our heavenly father has immortality. Immortality means no beginning and no end. Only the father had no beginning.