Main message: Seeking Jesus Christ as my wisdom, guidance, and presence.

Bible references:

• V1. "vision" (Proverbs 29:18)

"day or by night" (Psalm 1:2)(Joshua 1:8)

"sleeping" (Psalm 4:8)

• V2. "wisdom" (1 Corinthians 1:30)

"I ever... Lord" (John 15:4)

"Father" (Romans 8:15)

• V3. "riches" (1 Timothy 6:9-10)(Matthew 6:19-20)

"man's empty praise" (John 12:43)(John 5:41)

"inheritance" (Psalm 73:26)(Hebrews 9:15)

"first in my heart" (Matthew 22:37; 6:33)

"treasure" (Matthew 13:44; 6:21)(2 Corinthians 4:7)

• V4. "victory" (1 Corinthians 15:57)

"Sun" (Revelations 21:23)

"heart" (Psalm 73:25-26)(Romans 10:9-10)

"Still be my vision" (Hebrews 12:2)

Keywords: Be Thou My Vision, heart, Thou with me, heaven’s joys, Heart, Father, only, Ruler, High King of heaven,  my treasure, mine inheritance, true son; with Thee one

Interpretation notes:

• This melody uses the Irish folk tune Slane, which is associated with texts of personal devotion such as 'Be Thou My Vision' and 'Lord of All Hopefulness.' 

• The harmony changes frequently, often on each downbeat, and the melody moves mainly by step. 

• Line 2 repeats a four-note figure with varying harmony. 

• In line 3, the melody reaches a climax with a leap up to E-flat and then descends to B-flat within four measures, supporting the text about God as 'my great Father' and 'Heart of my own heart.'