This is incredibly intellectually dishonest of you.Even the DEMONS believe (James 2:19).
Are they "saved", Einstein??
You know very well there are two types of "believe".
One is only mental and one is of the heart,,,you yourself have explained this.
@CoreIssue is correct about the Eheopian. He certainly was saved BEFORE he was baptized; as the following clearly shows:
Acts 8:26-39
26But an angel of the Lord spoke to Philip saying, “Get up and go south to the road that descends from Jerusalem to Gaza.” (This is a desert road.)
27So he got up and went; and there was an Ethiopian eunuch, a court official of Candace, queen of the Ethiopians, who was in charge of all her treasure; and he had come to Jerusalem to worship,
28and he [the Etheopian] was returning and sitting in his chariot, and was reading the prophet Isaiah.
29Then the Spirit said to Philip, “Go up and join this chariot.”
30Philip ran up and heard him reading Isaiah the prophet, and said, “Do you understand what you are reading?”
31And he said, “Well, how could I, unless someone guides me?” And he invited Philip to come up and sit with him.
32Now the passage of Scripture which he was reading was this:
“HE WAS LED AS A SHEEP TO SLAUGHTER;
AND AS A LAMB BEFORE ITS SHEARER IS SILENT,
SO HE DOES NOT OPEN HIS MOUTH.
33“IN HUMILIATION HIS JUDGMENT WAS TAKEN AWAY;
WHO WILL RELATE HIS GENERATION?
FOR HIS LIFE IS REMOVED FROM THE EARTH.”
34The eunuch answered Philip and said, “Please tell me, of whom does the prophet say this? Of himself or of someone else?”
35Then Philip opened his mouth, and beginning from this Scripture he preached Jesus to him.
36As 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.”]
38And he ordered the chariot to stop; and they both went down into the water, Philip as well as the eunuch, and he baptized him.
39When they came up out of the water, the Spirit of the Lord snatched Philip away; and the eunuch no longer saw him, but went on his way rejoicing.
Verse 37 is missing from some translations. It might have been added for clarification. Even if we dismiss verse 37, we still have verse 39 that states the Ethiopian went away joyful after having the gospel explained to him.