Ephesians. 1:4-8 ...even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love he predestined us for adoption through Jesus Christ, according to the purpose of his will, to the praise of his glorious grace, with which he has blessed us in the Beloved. In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace, which he lavished upon us, in all wisdom and insight...
I know from verses in Scripture, like these in Ephesians, the Trinity had a "meeting" where the plan of salvation for me and you (who trust Christ, by His grace) was decreed. Theologians call this meeting the Eternal Counsel of Redemption. Simply put, the Trinity counseled within itself, before time, concerning the manifesting of God's glory through the redemption of chosen men and women. This is huge- the Holy Trinity met and chose me to be part of those who would be redeemed, furthermore, at that "meeting", before time, Jesus was chosen to do the redeeming, and He agreed to it! Continuing the thought about this intertrinitarian meeting from eternity past, The Holy Spirit would be the one to apply the work of the Son to me.
The Father chooses some to be redeemed, the Son redeems by the cross, and the Holy Spirit applies redemption!
It excites and encourages me that the Godhead- the Father, Son, and Holy Spirit- met before time to determine that I would be adopted as a son in Christ and, and as Ephesians 1:8 declares, wisdom and insight would be lavished upon me!
The Cross is about commitment. Today, again, I am remembering Jesus on the Cross for me. I am also remembering that it began with a glorious commitment on the part of the Trinity to save me- for God's glory.
The writer of Hebrews exhorts us by saying "May the God of Peace, who through the blood of the eternal covenant brought back from the dead our Lord Jesus, that great shepherd of the sheep". The eternal covenant spoken of here refers to the time before time that the Holy Trinity committed to saving me. When Jesus says "into thy hands I commit thy spirit" I must not lose sight of all that God has committed to in bringing the holy Lamb to that point on the cursed tree- for me.