Main message: Give of your best to the Master into the battle for truth.
Bible references:
V1. "give of your best" (Matthew 25:21)
"full armor" (Ephesians 6:13)
V2. "give, and to you shall be given" (Luke 6:38)
V3. "laid down His life" (1 John 3:16)
Keywords: give, your best, Master, strength, youth, ardor, battle for truth, Jesus, young and brave, loyal devotion, full armor, first place, consecrate, beloved Son, His love, ransom, laid down, heart’s adoration.
Interpretation notes:
The melody uses steady quarter notes.
The second line has a melodic drop.
The middle section has a melodic leap and changes harmony to C minor, then returns to E♭ major.