don't doubt what's obvious
Their messengers said: "Is there any doubt about Allah, the Creator of the heavens and the earth?" (Ibrahim: 10)
"So do not be in doubt about the Qur’an. Truly it is from your Lord, but most people don’t believe." (Hud: 17)
"Isa (Jesus) really gave knowledge about the Day of Judgment. So don’t doubt the Day, and follow Me. This is the straight path." (Az-Zukhruf: 61)
"Remember, they are truly in doubt about meeting their Lord. But He truly surrounds everything." (Fussilat: 54)
Don't doubt things that are already obvious and true. Just remember where they come from.
(from Syajaratul Ma‘arif, Syaikh al-‘Izz bin Abdus Salam)