The most important strength is the strength you need in the Lord or measure our Strength by how often we are on our knees!

Job 2:7, Zechariah 3:1, 2 Corinthians 11:3, John 10:10, 2 Corinthians 4:4, 1 Peter 5:9, 1 John 2:13, Revelations 12:11, Acts 4:23-31