In a general way both preaching and hearing the Scriptures, fasting, prayer and thanksgiving, as well as singing, are all institutions of divine approval relating to the worship of God, and, therefore, meet the definition of Christian ordinances. The only ordinances, however, given to the churches to be observed "till He come" are Baptism and the Lord's Supper. Both were established by Christ Himself. Baptism is the first Christian act of a believer after expressing faith in our Savior, and is a token of acceptance of Him; a confession of discipleship as well as an act of obedience (Galatians 3:27).
The Lord's Supper, ordained like Baptism to be observed by His churches till the end of time, differs in that it is to be repeated (see Acts 2:46).