But in the end, all Harvill (6-1, 262) could do was turn around, watch and wait to see if that was going to be enough.
It turned out to be as teammate Zann Jones brought down Shreveport (LA) Evangel wideout Eric Thomas at the 3 yard line to preserve a frenetic 37-36 come-from-behind win for the Saints.
"That was pretty scary and what an ending," Harvill said. "I got through the line, but then I saw him (Evangel quarerback David Dee Duron) pass it and saw that guy (Thomas) running toward the end zone. I was like ‘Oh, my gosh.' Thank God there were a couple of D-backs there. Thank goodness (Jones) got him stopped and right before he got him out of bounds, the clock went to zero."
Jones – who had two big plays late - said he was just doing as he was taught in practice.
"They had a couple of blockers out there and I don't know why they didn't block me, but I just sit there," Jones said. "I was waiting for some help to come, but it never did. I just did what I was taught, sink the hips, throw the arms and drive through. It worked."
It was a game that had several Razorback players on hand to watch, including quarterback Ryan Mallett, Rudell Crim, Evangel alum Ramon Broadway and London Crawford.
"I will never play in a game like this again in my life," said Harvill, who recorded two sacks on the night. "It was just the greatest experience ever."
Shiloh had trailed 23-13 at one point in the second half, but got it tied at 30-30 on a Trevor Tumlinson's 32-yard field goal with 6:25 left.
Evangel took the lead back less than two minutes later when Duron hit Thomas Bridgewater (7 catches for 226 yards and 3 TDs) on a 20-yard scoring strike with 4:30 remaining.
But the PAT was blocked, something that would obviously come back and haunt the Eagles.
Harvill said the Saints remained very confident at that point that they would score and win the game.
"We were just saying the game is not over until it is over," Harvill said. "But we just told each other we can give each other all the heart we got, go out there and give it our best. We made some plays and got it done."
The Saints did take the lead when junior quarterback Kiehl Frazier hit Jones on a 12-yard TD pass with 18 seconds left and Tumlinson booted the all-important PAT.
Virgil Williams returned the kickoff – the only one that both kickers failed to boot into the end zone all night – to the Shiloh 38-yard line.
Instead of allowing William Russ to try a 55-yard-goal and go for the win with 8 seconds left, Evangel decided to try and get some extra yardage and then use its last timeout.
But Thomas (9 catches, 155 yards, 1 TD) chose to make a break for the end zone instead of going down and came up just shy on his gamble in the rematch of a game Evangel won 47-9 last season.
Russ had already made field goals of 42, 42 and 22 while putting all of his kickoffs in the end zone.
"On that last play, I thought they were just going to try and get another 5 or 10 yards and kick a field goal because their kicker s probably good from 50 in. He kicked a 50-yarder on us last year actually when we played them.
"I think the kid (Thomas) made a big catch and is a big-time player and I think he saw an opening," Floyd said. "There was a huge hole there and I think he tried to take it all the way. I started looking at the clock and my heart has probably never raced that fast."
Russ had also saved what could have been a Shiloh touchdown early by scooping up a bad punt snap and somehow getting it off from the end zone.
"He is a big-time kicker and was just killing that ball the entire night Floyd said.
Harvill was a terror on defense, seemingly spending his entire night in the Evangel backfield harassing Duron.
"Their O-line and D-line were very good, but I just kind of found some weaknesses at guard and center," Harvill said. "We called some defensive line stunts and I was slanting in between the guards and doing some slants around the guard and swimming over the center."
Harvill was continuing to get into the backfield even as it was clearly he was constantly cramping up.
"Every time we would go out to play defense, I would be cramping up," Harvill said. "I started cramping up at the end of the second quarter, at the end of the third quarter and then at the end of the game.
"Every time I would get done with a series of defense, I would go over there and have to lay on the gator and they would have to rub my calves down because they were cramping so bad. Then I would have to get back up and go back out there. It was so hard. But the whole team just gave it our all and got it done."
Floyd loved what he saw from Harvill, who led a defense that limited Evangel to 68 yards rushing – albeit the Eagles threw for 428.
"I thought Samuel controlled the middle for the most part," Floyd said. "I think even the center had trouble, a couple of bad snaps and I think that is because Samuel had been wearing him out all night. Sam is a big-time player and we are lucky to have him."
Frazier, who has an offer from Arkansas among several others, was 23-of-49 passing for 256 yards with four touchdowns and one interception while also rushing 13 times for 102 yards and another score.
He led his team down the field and hit Jones on what turned into the game-winning touchdown on a slant pass.
It actually came on a third down play after an interference penalty – one of Evangel's 11 penalties for 103 yards – set up Shiloh at the 7 with a first down.
"I knew that if I threw it to him in a five-yard radius that he would make the catch," Frazier said. "He is maybe one of the best receivers in the state. Every time you get the ball to him, he is going to make a play."
Evangel led the total offense battle 496-438, but the fact that Shiloh ran for 182 yards helped it stay in the contest and pull it out in the end.
Jake Scott led the receivers with 8 catches for 83 yard and Jones had 4 for 53 while Chris Bryant's 54 yards rushing helped aid Frazier's 103.
"Evangel has so much talent out there on defense, like D-I players at every spot," Frazier said. "They played fierce and made us really reach down to win this game."
Harvill has offers from UNLV, SMU and Maryland.
He knows his performance on Thursday night could add to that.
"I just want to thank Jesus that I had this great of a game, especially being on TV and I know there were coaches here and watching it," Harvill said. "I just want to give all the glory to God."
It will also be getting to coaches such as Arkansas and Auburn, who have been evaluating whether to go ahead and offer.
"I can't wait to send the films off to the coaches," Harvill said. "I am hoping it gets me some more offers and I know things are going to start picking up."
He especially hopes the Razorbacks come with an offer soon.
"Oh, man I love Arkansas and it would be great to get an offer from there," Harvill said. "I am a big fan of (Arkansas defensive line) Coach (Bobby) Allen. I would love to get one from there."
Shiloh Christian linebacker Mitchell Roberts is getting interest from Illinois, Vanderbilt and Arkansas among others.
He was still a bit overwhelmed at the end of the game.
"I'm still kind of shaking," Roberts said. "That was the biggest game of our lives."
It certainly was different from the normal Shiloh operation of blowing out overmatched foes.
""It is refreshing from all of us," Roberts said. "Like you said the majority of our games are over at half or the third quarter and we are done playing at half. But this is one of those games that we got to enjoy. Coach told us before the game numerous times that this was going to be a four quarter game and sure as heck it was."
Roberts said he was just planning on kicking back and taking in Arkansas' game with Missouri State this weekend after that wild finish.
"I can't wait for their season," Roberts said. "I am always trying to make it to their home games – me and Jake Scott. He always has great seats so we are always hitting that up. It's exciting and I want to see what they have going for them this year.
"The coaches came and put in a whole new system with Mallett and Tyler Wilson," Roberts added. "It is going to be a fun year."