For to me to live is Christ, and to die is gain.
Philippians 1:21
I do not interpret this and the following verses to mean that Paul is transported up up and away to Heaven immediately to be with Christ.
That is very Roman Catholic rather than scriptural.
It also contradicts the many scriptures that refer to the dead as sleeping in forgetfulness.
Both the OT and the NT clearly describe an awakening from "the grave" so to speak and a person then seeing God - an example that readily comes to mind is
Psalm 17:15
As for me, I will behold thy face in righteousness: I shall be satisfied, when I awake, with thy likeness.
confirmed throughout the NT with scriptures such as -
1Corinthians 15:
35 But some man will say, How are the dead raised up? and with what body do they come?
42 So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption:
51 Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,
52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
53 For this corruptible must put on incorruption, and this mortal must put on immortality.
For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
1Thessalonians 4:16