'Doubtless' in the Bible

He who goes back and forth weeping, carrying his bag of seed [for planting],Will indeed come again with a shout of joy, bringing his sheaves with him.

So He said to them, “You will no doubt quote this proverb to Me, ‘Physician, heal Yourself! Whatever [miracles] that we heard were done [by You] in Capernaum, do here in Your hometown as well.’”

When the natives saw the creature hanging from his hand, they began saying to one another, “Undoubtedly this man is a murderer, and though he has been saved from the sea, Justice [the avenging goddess] has not permitted him to live.”

for [doubtless] there have to be factions among you, so that those who are of approved character may be clearly recognized among you.