In Ecclesiastes 3:20, this rhetorical question is answered: both man and beast return to dust, showing the uncertainty of the spirit's ascent.

Ecclesiastes 12:7 resolves the uncertainty of 3:21 by stating the spirit returns to God who gave it.

Ecclesiastes 8:8 echoes the theme of human powerlessness over the spirit and death, reinforcing the uncertainty here.

2 Corinthians 5:1 assures an eternal house in heaven after earthly death, answering the question of the spirit's destination.

2 Corinthians 5:8 declares that being away from the body means being at home with the Lord, directly affirming the spirit's upward journey.

Philippians 1:23 expresses Paul's desire to depart and be with Christ, confirming the human spirit's destination after death.

Genesis 2:7 describes God breathing life into man, showing the spirit's origin from God, which implies it returns to Him.

Luke 16:22 shows the beggar's spirit carried to Abraham's side, illustrating an upward destiny for the righteous.

Luke 16:23 depicts the rich man's spirit in Hades, demonstrating a downward fate for the unrighteous.

Psalm 49:19 says the wicked join their ancestors and never see light, portraying a downward fate that contrasts with the upward possibility.

John 14:3 promises Jesus will take believers to himself, affirming a heavenly destination for the human spirit.