He promised to double check the security of the RNC, which begins in Milwaukee on Monday.
There is no immediate evidence suggesting Thomas Matthew Crooks had assistance in the attack.
"He was a man of God, loved Jesus fiercely, and also looked after our church and our members as family."
The fundraiser raised $1.2 million by Sunday morning.
Crooks' car, discovered parked near the rally site in Butler, Pennsylvania, contained explosives.
Thomas Matthew Crooks’ father said he would wait until he talked to law enforcement before speaking about his son.
"Thank you to everyone for your thoughts and prayers yesterday, as it was God alone who prevented the unthinkable from happening."
"So we're done talking about the debate, it's time to put Trump in a bullseye."
Ashley Nerbovig posted on X, “Make America aim again,” in reaction to the news that the former president had survived the shooting.
Doherty was perhaps best known for her role as Brenda Walsh on the 1990s teen hit Beverly Hills 90210.
"Thankfully, President Trump wears the Armor of God. Today, our leader showed total command presence, stood tall, and said 'FIGHT'!"
" I think what we're hearing from people is that's not the message we want to be sending right now, we want to tamp it down."
"Extreme incompetence or it was deliberate. Either way, the SS leadership must resign."
"President Trump is doing well and grateful to law enforcement and first responders for their fast action."