This Psalm encourages us to be on guard, to have a readiness of mind like a soldier (2Tim 2:3-5) and king David certainly was no exception as a type of the elect and someone who had to constantly have a readiness of mind whether he was a child tending to the flocks of Jesse (1Sam 17:15) his father or a soon to be king of Israel who was fleeing from King Saul who represented God’s rejected anointed.

2Ti 2:3  Thou therefore endure hardness, as a good soldier of Jesus Christ.
2Ti 2:4  No man that warreth entangleth himself with the affairs of this life; that he may please him who hath chosen him to be a soldier.
2Ti 2:5  And if a man also strive for masteries, yet is he not crowned, except he strive lawfully.

1Sa 17:15  But David went and returned from Saul to feed his father’s sheep at Bethlehem.

It is the Lord alone who can sustain us through our trials and so we are so very grateful when we come to truly believe this and see the wonderful works unto the children of men for what they are (Psa 107:31). Salvation does belong unto the Lord and we are the blessed recipients who are learning of the grace and faith of Christ in this age which is preparing us with a readiness of mind that will help us not forsake so great a salvation and have us made ready as the bride of Christ.

Psa 107:31  Oh that men would praise the LORD for his goodness, and for his wonderful works to the children of men!

The Lord will sustain his people and at the same time give us great tribulations and enemies which we must experience to set the stage for our miraculous deliverance through Christ alone who will  “Arise, O LORD; save me, O my God: for thou hast smitten all mine enemies upon the cheek bone; thou hast broken the teeth of the ungodly.”

These scriptures in Psalm 3 are truly pointing to the fact that we are bruised for the world and lose our life and are hated of all men for his name sake, but in the end our suffering will be instrumental in providing spiritual meat to the masses who will be fed by the elect of God.

Isa 42:1  Behold my servant, whom I uphold; mine elect, in whom my soul delighteth; I have put my spirit upon him: he shall bring forth judgment to the Gentiles.
Isa 42:2  He shall not cry, nor lift up, nor cause his voice to be heard in the street.
Isa 42:3  A bruised reed shall he not break, and the smoking flax shall he not quench: he shall bring forth judgment unto truth.

The full hour + study entitled ‘Readiness of mind in the last days‘ is available here.