Can anyone withhold baptism? Reflection on Acts 10:47-48

In this passage from Acts, baptism is preceded by the receiving of the Holy Spirit. But, in Acts 8:14-24, the Samaritans were baptized before receiving the Holy Spirit.

I don't think that which came first is as important to Luke as that they both do, and, even more important, that they both come to people that the rest of us might not have thought likely or even worthy.

To read the United Methodist understanding of baptism, look at Overview.

Here are a couple of excerpts:

We also believe that in baptism God initiates a covenant with us, announced with the words, “The Holy Spirit works within you, that being born through water and the Spirit, you may be a faithful disciple of Jesus Christ.” This is followed by the sign-act of laying hands on the head, or the signing of the cross on the forehead with oil. The word covenant is a biblical word describing God’s initiative in choosing Israel to be a people with a special mission in the world, and Israel’s response in a life of faithfulness. The baptismal covenant calls us to a similar vocation.
From the earliest times, children and infants were baptized and included in the church. As scriptural authority for this ancient tradition, some scholars cite Jesus’ words, “Let the little children come to me…for it is to such as these that the kingdom of God belongs” (Mark 10:14). However, a more consistent argument is that baptism, as a means of grace, signifies God’s initiative in the process of salvation. John Wesley preached “prevenient grace,” the grace that works in our lives before we are aware of it, bringing us to faith. The baptism of children and their inclusion in the church before they can respond with their own confirmation of faith is a vivid and compelling witness to prevenient grace.