Psalms 50:14-15

Offer unto God, &c.— In these two verses is expressed the establishment of the Christian service, the spiritual oblation of prayer and thanksgiving. By thanksgiving here may be meant not only the blessing God for all his mercies in general; but also that eucharistical sacrifice, in which we particularly bless him for the gift of his son to die for us; we are to pay the vows, to perform the promises and resolutions made at that eucharist, which are constantly to be attended with offerings to the poor, conformable to the voluntary oblations among the Jews; With such sacrifice, God is still well pleased, Hebrews 13:16. And thus doing, I will deliver thee, saith he; that is, for the sake of Messiah, in whose name all our services are to be addressed to God.