35 Then Philip opened his mouth, and beginning from this Scripture he preached Jesus to him. 36 As they went along the road they came to some water; and the eunuch said, “Look! Water! What prevents me from being baptized?” 37 And Philip said, “If you believe with all your heart, you may.” And he answered and said, “I believe that Jesus Christ is the Son of God.” (Acts 8:35–37, NASB95)
This passage resolves important questions about the salvation of sinners. 1) The lost need to hear the gospel to be saved. Faith comes from hearing the word of God (Rom. 1:16; 10:17). When Philip “preached Christ” in Samaria, it included things concerning the kingdom of God, the name of Jesus Christ, and baptism (Acts 8:5, 12). Philip preached the same gospel to the Ethiopian. We correctly conclude that infants do not need saving because they cannot hear and believe the gospel. 2) Preaching Jesus includes the evidence needed to believe He is the Christ, the Son of God. How else did the Ethiopian come to believe Jesus is God’s Son except by hearing the evidence (cf. Jno. 20:30-31; Acts 2:40-41)? 3) Preaching Jesus includes water baptism. The Ethiopian would have known nothing about water baptism without Philip explaining it to him. Undoubtedly, he explained it is for the remission of sins to be saved by Christ (Acts 2:38; 1 Pet. 3:21). 4) Belief in Christ precedes water baptism. This is more evidence that babies are not proper candidates for baptism since they do not have the mental and moral capacity to believe. 5) Christ’s plan of salvation is belief plus baptism equals salvation (Mk. 16:16). It is not belief, salvation, and then baptism. Neither is it baptism, saved, and then believe.