I guess Alligator's claim is that if you are sprinkled & not immersed, you go to hell, even if you believed in the Son of God (not merely in the sense of believing facts, but in the sense of trusting Him for salvation).
Whosoever believes implies faith alone results in salvation.
Trust in Christ as savior is your little pet phrase. It is not found In the Bible.
Trust in Christ for salvation is found over & over in the Bible. Trusting Him in the sense of "Savior," instead of mere factual belief, is the issue.
Since believe/belief is used sometimes just for believing facts (as illustrated by satan's belief), it needs to be made clear that saving faith (belief) is trusting in the Son of God who is described as follows:
Thou shalt call His name Jesus, for He shall save His people from their sins. It is clear that trusting the Lord Jesus is trusting in the Savior Who brings salvation.
Sirs, what must I do to be saved?
Trust in the Lord Jesus Christ and you shall be saved. pisteuo = trust.
For whosoever shall call on the name of the LORD (calling Christ YHWH) shall be saved.
Ps 37
Commit thy way unto YHWH
Trust also in him, and he will bring it to pass.
6 And
he will make thy righteousness to go forth as the light,
And thy justice as the noonday.
Ps 78:21
"Therefore, YWHW heard, and was wroth;
And a fire was kindled against Jacob,
And anger also went up against Israel;
22 Because they believed not in God,
And trusted not in his salvation.
John 4:42:
and they said to the woman, Now
we believe, not because of thy speaking: for we have heard for ourselves, and know
that this is indeed the Saviour of the world.
To believe on the Lord Jesus Christ is to trust Him as your Savior.
Jer 39:18
18 For I will surely save thee, and thou shalt not fall by the sword, but thy life shall be for a prey unto thee; because thou hast put thy trust in me, saith YHWH.
Isaiah 12:2
2 Behold, God is my salvation; I will trust, and will not be afraid; for Jehovah, even Jehovah, is my strength and song; and he is become my salvation.
2 Chron 13:18
18 Thus the children of Israel were brought under at that time, and the children of Judah prevailed, because they relied upon Jehovah, the God of their fathers.
11 And Asa cried unto Jehovah his God, and said, Jehovah, there is none besides thee to help, between the mighty and him that hath no strength: help us, O Jehovah our God; for we rely on thee, and in thy name are we come against this multitude. O Jehovah, thou art our God; let not man prevail against thee.
7 And at that time Hanani the seer came to Asa king of Judah, and said unto him, Because thou hast relied on the king of Syria, and hast not
relied on YHWH thy God, therefore is the host of the king of Syria escaped out of thy hand. 8 Were not the Ethiopians and the Lubim a huge host, with chariots and horsemen exceeding many? yet, because thou didst rely on YHWH, he delivered them into thy hand.
Woe to them that go down to Egypt for help, and rely on horses, and trust in chariots because they are many, and in horsemen because they are very strong, but they look not unto the Holy One of Israel, neither seek YWHW!
Jer 30:10
he that walketh in darkness, and hath no light, let him trust in the name of YHWH, and rely upon his God.
1 Chron 5
20 And they were helped against them, and the Hagrites were delivered into their hand, and all that were with them; for they cried to God in the battle, and he was entreated of them,
because they put their trust in him.
Ps 13
But I have trusted in thy lovingkindness;
My heart shall rejoice in thy salvation.
6 I will sing unto YHWH,
Because he hath dealt bountifully with me.
Ps 31
He is our help and our shield.
21 For our heart shall rejoice in him,
Because we have trusted in his holy name.
Ps 78
Therefore Jehovah heard, and was wroth;
And a fire was kindled against Jacob,
And anger also went up against Israel;
22 Because they believed not in God,
And trusted not in his salvation.
Ps 115
O Israel, trust thou in YHWH:
He is their help and their shield.
10 O house of Aaron, trust ye in YHWH:
He is their help and their shield.
11 Ye that fear YHWH, trust in YHWH:
He is their help and their shield.
Prov 3
Trust in YHWH with all thy heart,
And lean not upon thine own understanding:
In all thy ways acknowledge him,
And he will direct thy paths.
Prov 29
The fear of man bringeth a snare;
But whoso putteth his trust in YHWH shall be safe.
Isa 12
2 Behold, God is my salvation; I will trust, and will not be afraid; for YHWH, even YHWH, is my strength and song; and he is become my salvation.
Isa 26
Thou wilt keep him in perfect peace, whose mind is stayed on thee; because he trusteth in thee. 4 Trust ye in YHWH forever; for in YHWH, even YHWH, is an everlasting rock.
Jer 17
7 Blessed is the man that trusteth in Jehovah, and whose trust Jehovah is. 8 For he shall be as a tree planted by the waters, that spreadeth out its roots by the river, and shall not fear when heat cometh, but its leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit.
Jer 39
But I will deliver thee in that day, saith Jehovah; and thou shalt not be given into the hand of the men of whom thou art afraid. 18 For I will surely save thee, and thou shalt not fall by the sword, but thy life shall be for a prey unto thee; because thou hast put thy trust in me, saith Jehovah.
Dan 6
So Daniel was taken up out of the den, and no manner of hurt was found upon him, because he had trusted in his God.