Psalm 16 reveals that as the God-man, mingled with divinity and humanity, Christ took God as His portion, being obedient to God unto death, resurrecting into glory, ascending to His heavenly attainments and obtainments, and sitting at the right hand of God for the accomplishment of God's eternal economy concerning the church, the Body of Christ.
Psalms 2224 reveal that Christ died an all-inclusive vicarious death and entered into the church-producing resurrection. In resurrection He became the Shepherd of God's flock, leading the sheep of God to participate in the church as the house of God in this age, consummating in the New Jerusalem in the coming age and in the eternal age; and He will be God's triumphant King of glory to reign in God's eternal kingdom.
Psalm 40:6-8 reveals that Christ came to do the will of God to fulfill and replace all the Old Testament sacrifices and offerings according to what is written in the Old Testament concerning Him.
Such a Christ brings God's chosen people into the enjoyment of God firstly in the church in this age and ultimately in the New Jerusalem in the millennium and in eternity (Psa. 27; 36).